Diego Costa's work permit allowed him to join Wolves until the end of the season.
He played 19 times and scored five goals in the 2021 season before his contract was terminated after just five months.
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Wolves have moved for the ex-Atletico Madrid forward after summer signing Sasa Kalajdzic was ruled out due to an injured knee.
He hasn't found a club despite being linked with another Brazilian side. He was close to signing a deal with Rayo.
It is not known if Lage picks Costa in his squad for Saturday's game against Manchester City or not.
Sky sports reporter Danyal Khan is working.
This move was made for Wolves. Having spoken to Bruno Lage many times this season, the Wolves manager continuously reiterated how important it was to bring in another strikers to give them competition for their star player.
Even though there was a lot of excitement around the Austrian's arrival, nobody could have predicted that his debut would end in injury. He won't be back for a long time.
Wolves acted quickly in the free agent market and in Costa they have a short-term replacement for the season.
Costa will be 34 next month and the impact on Wolves could be significant. He scored 52 goals in 89 appearances in the premier league and won numerous trophies.
Bruno Lage brought a new formation to the Wolves this season. This has led to a promising new look defence with Max Kilman and Nathan Collins at the center of it, with the team boasting the lowest goals conceded so far this season.
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Wolves have had trouble scoring goals at the other end of the field. Wolves have the players to put the ball on a plate for Costa and he in turn can provide a focal point as well as rotating with him.
The question is how long it will take for Costa to get match fit after not playing since December, but there should be no doubts that Costa could provide just the bite that Wolves need to get more goals into their side.
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A chain of events has led us here after an injury to a Wolves player. Diego Costa might come back. Some people are not sure if a move will work, but most want to find out.
Costa was a constant presence in the league. His goals led to the title for Atlante Madrid and he followed that up with a second title with the Blues. It was done twice. Fans of the opposition disliked him. The opposition players didn't like him. He was on everyone's team.
There are many good reasons why Costa isn't the solution to Wolves' problems. The club paid upwards of £15m to bring in someone else just days before the out-of-contract forward was due to sign.
Costa hasn't played football in years. He will be expected to remember, but not so much in England. The last time this player was on a Premier League pitch, he was celebrating with his teammates after they won the title.
Costa was the man who helped the Blues win the last two league titles. He scored 20 goals in the two seasons. The problem position at the bridge was the strikers. Costa was the one to make it his own.
Goals have been hard to come by. He hasn't hit double figures in a league season in a long time. He still has the edge in his head. It's possible that he isn't in his old body. The Mineiros did the double in Brazil.
Wolves would like that winning attitude. The squad is missing senior figures. There is an abrasive personality on the pitch. Expectations are that he could adapt quickly as a native Portuguese speaker.
Here, you can read Adam Bate's full feature.