Spanish veteran striker Diego Costa will have to sweat over his Wolves' future.
The former Chelsea and Atletico Madrid forward has been solid for Julen Lopetegui's team in recent weeks.
The 34-year-old scored his first goal back in the league against Brentford two weeks ago.
Asked about Costa, Lopetegui told reporters: Diego has had a big impact - I highlight his work rate and mentality repeatedly - I've said this a lot of times.
He was out of the team - and sometimes the squad - but he's a very competitive player.
He's not come here thinking about his holidays - he wants to compete, to play. He pushes in every training session. That's why he's playing and helping us. His experience and energy have been very important to us."
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