You have Darren Bent already...
Yeah.. so we have one player who can play any european game? No backup? I wouldn't like Fraizer to be our only backup. Also if we do go two up front, who is a replacement? I again wouldn't want fraizer as a backup if any of them get injured.
I wouldn't mind him as a 4th striker, but we need a proven 3rd striker to either play with Pav/Bent or as a backup.