Darren Bent will be looking over his shoulder in the fear Robbie Keane could take his place in the Aston Villa team, according to Shay Given.
Republic of Ireland captain Keane has returned to the Premier League on a two-month loan deal from LA Galaxy in a bid to help Villa's flailing season.
And, having made his debut in the 1-1 draw against Everton, the ex-Tottenham, Liverpool, Leeds, Inter Milan and Coventry forward will on Saturday face the club where his career started, Wolves.
Keane is again likely to be a substitute at Molineux, but fellow countryman Given thinks the striker's presence will make Bent and the whole of the Villa squad raise their game.
The goalkeeper said: "When you sign a player of Robbie's calibre, it gives the whole dressing room a lift, not just Darren.
"It gives everyone a kick up the backside that he is breathing over their shoulder, or pushing the manager for a start.
"We saw with (Thierry) Henry recently that fairytales do come true sometimes. It would be amazing if he (Keane) could score, especially with it being a big derby.
"It is where it started for Robbie. But I am sure he would just want us to get three points.
"There are a few players here who can help him settle into the squad and we are delighted to have him here.
"He is a big personality and a big-game player. He has showed in training how big a player he is as well.
"He has given the changing room a big lift and gives the manager a headache now to get him in the team."