Djokovic is not the favorite for Wimbledon.....Fed is then Murray,then Novak or Rafa depending on his form
Saberq if you really think Murray is going to have better odds come Wimbledon than EITHER Djokovic or Nadal then you're crazy! Andy has never won Wimbledon and taking the Olympics just wont be enough for him to instill that much confidence in the bookies.
the odds will probably be Djokovic/Federer, Nadal/Murray, and the only reason Nadal may not have better odds is because of the wild care factor of him having been gone for 8 months
as for Federer, probably at least one more but as another fine poster pointed out, I would be shocked and awful surprised if he got 3 or more