I don't think we should sign him, mate - though he has been linked with Paris Saint-Germain, so some big clubs are certainly looking at him. Mário is an interesting player because he can play all across the midfield and has good technique - which seems like an ideal combination on paper because he could be an X-factor, but he hasn't had the best time with Inter after being arguably the best midfielder in Primeira Liga - so there are a couple question marks about his ability to adapt to harsher leagues or environments. Plus, there were some doubts about his lack of aggressiveness in the past, and they haven't been resolved - maybe Mourinho can make him tougher and more committed on the field? Stylistically as well, he's probably more suited to La Liga - at clubs like Sevilla or Villarreal or Valencia to fine-tune his game.