David Vaughan has warned his Sunderland teammates that Tottenham Hotspur star Gareth Bale "never has off-days" as the Black Cats prepare to face Spurs at White Hart Lane on Sunday.
Having played alongside Bale for Wales, Vaughan has seen how devastating the PFA and Football Writers' Player of the Year can be.
"He's been outstanding this season," he told the Sunderland Echo. "But playing with him for Wales, you can see how good he really is. He's won a few games by himself.
"He's got great technique and he's a really powerful athlete as well. But he always seems to make an impact on games. He never has off-days. Tottenham have got some really good players, but Gareth Bale makes a big difference."
Meanwhile, Sunderland boss Paolo Di Canio has told fans he does not want to finish the season with a defeat and will be going all-out to beat Champions League-chasing Spurs.
The Black Cats secured their Premier League safety when Wigan were beaten 4-1 by Arsenal at the Emirates on Tuesday.
They are currently 17th in the Premier League table but could climb as high as 11th with a win - earning an extra £4.5 million in prize money.
"It's crucial that we get something from the game on Sunday, because I don't want to finish with another defeat and I don't want to finish fourth-bottom," Di Canio said.
"It is not possible to go into this weekend and not want to win - those are not my values. We are safe, but my players have to be professional and approach the game in the right way.
"They must want to compete against Spurs' top individuals because it is a matter of pride. Stop Bale, or [Jermain]Defoe or [Emmanuel] Adebayor. Try to damage Spurs, score a goal.
"That should be enough motivation for each player. Of course, it is a group challenge - but every player should feel it on an individual level."