Borussia Dortmund have left Pierre-Emerick Aubameyang out of the squad for their trip to Hertha Berlin, with sporting director Michael Zorc questioning the striker's mentality amid reports he is close to joining Arsenal.
Dortmund hit out at Arsenal boss Arsene Wenger after the Frenchman suggested the Gabon international would be a good fit at Emirates Stadium during his media conference on Thursday.
Aubameyang has been strongly linked with a switch to Chinese Super League side Guangzhou Evergrande Taobao, but he is also reportedly a target for the Gunners as a replacement for Alexis Sanchez, who appears set to join Manchester United.
Zorc labelled Wenger "disrespectful" for speaking about Aubameyang and confirmed ahead of Dortmund's match against Hertha on Friday that the 28-year-old would not be included in Peter Stoger's squad.
"Auba trains in Dortmund," Zorc told reporters. "We have the impression that Aubameyang is not 100 per cent mentally focused. It's a difficult situation."
Stoger stated earlier on Thursday that Aubameyang was in contention to feature against Hertha despite ongoing rumours about his future.
"It's clear that it [transfer speculation] is exciting for everyone, but it was really not an issue for us," he said.
"If he goes with us [to Berlin], of course he could play as well, but there is no guarantee for anyone.
"Basically, he decides whether he qualifies for this team. I currently have the impression that everything is OK."
Aubameyang was left out of Stoger's squad for a 0-0 home draw with Wolfsburg last weekend after missing a team meeting.
He was also temporarily suspended by the club earlier in the campaign due to disciplinary issues, his poor time-keeping reportedly the problem.
Zorc previously said he does not feel that Aubameyang's behaviour is an attempt to force a move away from Dortmund in the same vein as Ousmane Dembele, who went on strike ahead of his club-record switch to Barcelona.
Despite an unsettled season, Aubameyang is BVB's top goalscorer in the Bundesliga with 13 goals in 15 appearances.
|BREAKING NEWS: Juventus complete signing of free agent Emre Can|
|Fred completes Manchester United switch|
|Dembele will not join a Spurs rival|
|What were the 0.4 per cent doing? Iceland captain marvels at TV audience|
|Forsberg ready for ´next big step´ after RB Leipzig|
|´Retired´ Brits on bench as Springboks ring changes for final Test|
|Meninga: Key Kangaroos positions up for grabs in Origin|
|FIFA gets shirty over Ronaldo claims|
|Soyuncu keen on Arsenal switch|
|Atmosphere much better after criticism, says Hummels|
|FIFA issues statement after ´questionable´ Amrabat decision|
|Cipriani and Robshaw to start for England at Newlands|
|Team Sky hit back at Hinault´s ´irresponsible´ Froome comments|
|Iran fans are the real winners as women get glimpse of the future|
|Beckham predicts England-Argentina World Cup final|
|Napoli should sign Meret, Zenga claims|
|Meticulous Mouratoglou shaping stars of the future|
|Journalist hands Khedira boarding pass for early flight home|
|Germany v Sweden: Muller upbeat ahead of huge World Cup clash|
|South Korea v Mexico: Germany´s conquerors set for role reversal|
|Chandimal appeals against one-match ban|
|Fofana and Lamerat start, Parra skipper for final All Blacks Test|
|Asia and Africa being left behind - Queiroz|
|Emre Can arrives for Juventus medical|
|Championship fixtures: Bielsa´s Leeds face Stoke while Lampard´s Derby go to Reading|
|Tui handed first Wallabies start, five changes for Ireland|
|Sorensen: Denmark need to ´muscle up´ against Australia|
|Nolan Arenado helps Rockies power past Mets|
|Pavon set to be unleashed as Sampaoli plots Messi masterplan|
|Pique welcomes discussion with Barca hierarchy|
|Ramos hits back at Maradona|
|Spieth praises U.S. Open champion Koepka|
|Loftus-Cheek will consider Chelsea future|
|Jorginho deal not done yet - City|
|Amrabat slams referee Geiger over alleged shirt request|
|Neymar targets improvement against Costa Rica|
|Confident Spieth ready to relish ´Car-nasty´ Open|
|All Blacks ring the changes for series finale with France|
|Sampaoli yet to decide on Argentina XI to face Croatia|
|Bale needs Real Madrid assurances, says agent|
|What game were you watching? - Costa bites back at journalist|
|Catalans capitalise on Leeds collapse to secure victory|
|Ronaldo facial hair inspired by Quaresma joke|
|This is not football - Carvajal criticises Iran tactics|
|Costa strike keeps 2018 World Cup waiting for first goalless draw|
|FIFA fines Mexico over discriminatory chants|
|Suarez announces wife´s pregnancy after World Cup heroics|
|Fortune favours Spain´s ´Supermen´ as luck proves to be Iran´s kryptonite|
|Hubert Green, U.S. Open winner who ignored death threat, dies at 71|
|Osaka injured in Birmingham, Kerber crashes out in Mallorca|
|Iran 0 Spain 1: Costa goal breaks stubborn resistance|
|Cilic battles back but Wawrinka bows out at Queen´s|
|Messi the greatest but Croatia will play to beat Argentina, says Dalic|
|Thiem stunned by Sugita in Halle|
|Salah rejects talk of rift in Egypt camp|
|England Women follow up men´s ODI record with T20I high|
|Southgate laughs off dislocated shoulder: Better me than one of the players!|
|World Cup hosts Russia qualify as Egypt make early exit|
|Pique wins 100th Spain cap in Iran World Cup clash|
|Serbia v Switzerland: Kolarov not interested in playing for a draw|
|Rakitic wary of ´uber-motivated´ Messi|
|Not my finest moment - Mickelson issues apology after U.S. Open controversy|
|´Best in the world´ Messi the victim of unfair treatment, says Sampaoli|
|Suarez off the mark but resurgent Russia will not fear stuttering Uruguay|
|Uruguay 1 Saudi Arabia 0: Centurion Suarez strikes to send La Celeste, Russia through|
|Peru boss Gareca not a fan of ´novelty´ VAR|
|Nigeria v Iceland: Hallgrimsson anticipates another intense battle|
|Griezmann to face Peru despite ankle issue and struggles – Deschamps|
|Leicester sign Norwich´s Maddison|
|Leinster face Wasps, Bath, Toulouse in Champions Cup draw|