The only place Lampard will go to if he leaves Chelsea is the MLS, following the footsteps of Beckham and Henry. MLS offers decent Football and good money, so perhaps he might go there if he still wants to play Football even longer after he really does fall out of favour or something or he just can't have the physical toughness to compete with younger players, but you never know, maybe he will keep playing in the PL till hes 40 xD As for the bid, no, as AvB considers Lamps a considerable backup, and Lampard wouldn't want to go to Man United. Being at Chelsea for so damn long, why would you want to go to Man United? It's like starting over a new life with the likes of Wayne Rooney and Nani in your face all the time instead of the warm faces of Terry and such. If that isn't enough, Lampard is old, and being old, you don't want to take the extra leap and change clubs and have loads of burden, pressure, failure to adapt to Man United's style of play, getting benched, can't link up with Rooney, and missing his mates like Terry and Cech back in Stamford Bridge who he went through so much glory and despair in the course of 10 years! Basically, starting over after 10 years at Chelsea is quite painful and mentally depressing. Imagine this: Lampard standing in front of Old Trafford, holding a picture of Stamford Bridge in his hand, and painfully chucking it away into the bin. He than says to himself: "this is my new life".
Fact: Lamps is also in good form right now, 8 goals scored in PL, so it's a heads up for him to be even more happy at Chelsea.
And anyway, why would Ferguson welcome Lampard? I don't see why he would need him when there are players like Christian Eriksen he needs to chase! The headlines of Lampard to United won't be convincing at all for United fans if they see it, in terms of competing with City and having their squad even stronger.
Lampard would be a fantastic addition to ANY squad if you go back to his prime, but don't get me wrong, he still is a great addition, but not to ANY squad anymore, as there are just so many other young promising Midfielders in the Football world, say Mario Goetze for example, Lamps just can't compete with a young, fresh, hyped player from Germany. People's most likely response: why would you sign a 33 year old Frank Lampard who is out of his prime and instead not chase players like Gotze, Hazard, and Eriksen?
Chelsea fans, don't bash on me, I do also think Lampard is still a very good player!