In regards to Hazard, he revealed that he would be 'playing in Manchester' next season. This was a few days ago though, so Chelsea might have jumped in with a bid after they won the Champions League. Chelsea can probably match City on any one player in terms of asking price and wages, they just can't throw as much as City can overall at masses of players. However, the difference would be minimal still I reckon, there's only so much that teams wouldn't accept for their big players (Ronaldo, Kaka, Ibrahimovic for example).
Hazard will have to think which would be the best move for him:
Manchester United: The best manager to work with a younger play from the current selection is definitely Sir Alex. However, he'll have to accept less wages and Lille would probably have to accept the lowest price offer. United already have Nani, Valencia, and Young battling it out for first team football every week. If Park doesn't leave and United sign Kagawa, will Hazard even be guaranteed that many games? No. Even though it's a hot talent, he's still young and would probably play less often. However, if United reveal that their real target is Hazard and don't sign Kagawa, along with letting Park go, then he might fancy his chances to play for the more successful team.
Manchester City: They need wingers for a plan B. They can offer the best price to Lille and the most wages. They maybe have the most potential to go and win other trophies and be successful. The only thing he'll be wary of is how often City will play with wingers. They have a set formation now with their four attackers switching positions throughout a game. I don't know if Hazard will replace them, he could be more of an impact player.
Chelsea: They can probably match the asking price and offer similar wages. They need Hazard in a similar way to City, except you can see Chelsea getting rid of a lot of forwards in Drogba, Kalou, and possibly Malouda. He would fancy his chances of starting games here IMO. Him and Mata could take turns playing behind Torres or on the left wing, while Ramires could nail down the right sided position. Lampard, Meireles and Mikel would alternate in the two deeper midfield positions. He'd still get Champions League football, but Chelsea might have to get it right in the transfer market to make it into the top four again (unless Spurs and Newcastle lost a few players after not making the UCL). In which case, a top four of City, United, Chelsea, and Arsenal is pretty much nailed on for next season IMO.
Obviously, I'd love Hazard to come to United, but after weighing it all up I think Chelsea is the best move.
So, obviously he'll go to Man City... Lol.