While Arsenal youngster Folarin Balogun has also been the subject of interest from Bramall Lane,Wilder would jump at the chance to acquire Brewster's services on loan after watching him impress during a spell with Swansea City last season.
Wilder said: “I don't know. I'm not going to mug everyone off by saying we haven't spoken about Rhian. I've spoken to their manager and the CEO has spoken to the CEO. I'll leave it up to him (Steve Bettis) now. We have a list of targets, though.
"We have to."