SCUNTHORPE United loan signing Marcus Williams is someone with a point to prove.

That's the view of manager Alan Knill as the 25-year-old full-back still awaits his first game in his second spell at the Iron.

Williams has been struggling with a back injury since returning to Glanford Park on loan from Reading just before the transfer deadline.

And he is still waiting to see if he will be involved in tomorrow's crunch relegation clash at Selhurst Park, against Crystal Palace.

"He does come into contention," said Knill of Williams, who has not played first team football for any club since November.

"He is a good trainer and receptive to things we are doing.

"Marcus is an experienced player at this level and knows the league.

"And in my opinion I think he has got quite a bit to prove.

"Talent wise he should be in somebody's first team regularly.

"He has needed to come here and prove what a good player he is."