I think it would be crazy to not take a 23 year old with rabiot's tools on a free. Just too good of a deal for too good of a young player. I know the wages are high, but we can go lower than vidal and busi--and those guys are declining. I would say the odds alena are better than him is like 1/5. If alena was likely to be better than what barca has he would be thriving in training and playing regular important matches, just like arthur earned starts and bigtime minutes.
Finally, you have to wonder why psg and deschamps (sp?) had fits over him, if he was a dime a dozen they would have said fine, go find yourself a new club or no worries if u dont want to be part of france--you just make my job easier with one marginal player i dont have to give disappointing news too, and see you later and good luck, like liverpool did with Can and arsenal with Ramsey. the fact he has skills and talent why they were so upset. And at 23 he is young, and will be highly motivated i believe to prove his former club and national team wrong. Barca can take advantage of that skill and motivation. Low risk, high upside, move.