Aimar would come, shine for a couple of games, dip in form, get injured perhaps, dip a little bit more, be put out of the side, whinge to the press and fall out with MON.
We need hard workers and people who isn't bigger than the club. Bringing in a player who hasn't performed for 5 years isn't the right one.
Why bring Ronaldo and Fabregas up in this? They were 18 and 16 when they were brought in by their managers, Aimar is 27 years old or so. Not to mention the two former players extreme advantage in terms of ability. Both are tons better than Aimar and they have 5 years to get better. BTW, Ronaldo weights 15 kg more than Aimar or something, thus not leightweight.
I am willing to put all of my knowledge, dignity and future-sayings into this call, Aimar would never make it in the Premiership. At his best, a sublime footballer (at least I saw it 5 years ago), but on a regular basis he is too much of a name, not a performer.