Wolves have launched an appeal to the Football Association after failing to gain a work permit for Diego Costa.
Costa is travelling to Wolves’ Compton training base as the Premier League club wait for news of their appeal.
The former Chelsea striker has been on trial with Wolves this week as the club look for cover following injuries to Sasa Kalajdzic and Raul Jimenez.
Costa, 33, is a free agent having been without a club since leaving Brazilian side Atletico Mineiro in January.
He has not played a professional game since 12 December and his lack of action in recent months meant he did not automatically qualify for a work permit.
Meanwhile, Leeds United manager Jesse Marsch has been charged by the Football Association for “improper language and/or behaviour” during his side’s defeat by Brentford on Saturday.
The American was infuriated after Leeds were denied a penalty.
He was sent off after urging referee Robert Jones to use the monitor to review a challenge by Aaron Hickey on Leeds winger Crysencio Summerville. Marsch has until Friday to provide a response to the FA’s charge.
The 5-2 win lifted Brentford to seventh in the table, while Leeds slipped to ninth after their second successive Premier League defeat.
The Elland Road club are still seeking their first victory on the road this season.
