As long as we actually use the 30 mil in positions we need reinforcing in, such as CF, DMF, RB, etc, then I don't care about Cesc going to Chelsea or any other club.
I think he is a very good player, but I think there lacks much evidence to show that he is the type of world-class player like Messi, Iniesta, Ronaldo, Suarez (or even Ozil of '10,'11 in Germany & Madrid) to bring the team to the next level.
I don't mean to crap on his legacy, he was a leader in that era and was a huge part of the reason we kept making the CL knockout stages and remained in the top 4. But let's remember that we haven't been above 3rd place since 04-05 season including the years that we had Fabregas, Van Persie, and Nasri!. And we remained in the Top 4 for the years he left. In addition, he has good statistics at Barcelona, but his stay there has not been far from influential as he struggled to get a cemented place in the squad and failed to win over the fan's support.
Again, he would have been a good addition regardless. But, is he what we need to challenge for the title? I don't believe so. I believe we need a
CF and we are linked to Jackson Martinez, Balotelli, and Mandzukic. If we get any of those, that would really be fantastic. In addition, we need the replacement for Sagna, and an alternative/improvement to Flamini. These are the musts. Then secondary additions would be another CB, LB, and then finally, another physical attacker or Cesc for the midfield/offensive line.