No, keep him as backup. The common belief that he just isn't good for a title winning team seems to be holding weight now.
I was discussing this with Zimm earlier in the season but there's been no team that has won the Premier League without having a world class free scoring striker up front: Drogba, Rooney, RVC, Henry, Shearer, Cantona, Aguero, Van Nistelrooy, Ronaldo etc etc. I thought we would be the first team that would buck the trend but sadly it seems this isn't going to be the case. Unfortunately these type of players are a dime in a dozen and are extremely difficult to get. We had one of them but instead of taking a principled approach to the matter we decided to sell the cunt to Man United for "footballing reasons" instead of holding firm like Dortmund and Liverpool have done. Weak and spineless.