The Former Tottenham forward was impressed with the Serbian international’s performance as Palace earned a crucial 2-0 win away from home.
Roy Hodgson’s side are struggling for survival in the Premier League, and the result have taken them out of the drop zone.
The 26-year-old scored the second goal of the match from the penalty spot to seal all three points for the Eagles, and Crooks says that they need big performances from the Serbian if they are to avoid the drop.