The 19-year-old had been linked to clubs in the Premier League and Serie A as well as a return to Paris Saint-Germain, but the Glasgow giants have sealed his signing
The Argentina star announced his international retirement after erring from the spot in Sunday's final, but his long-time team-mate says he must block out negative voices
The 29-year-old is a free agent after leaving Nice and was keen on a move to Paris Saint-Germain, although the French champions have not tabled an offer
With only eight teams left in the competition, which side will end up lifting the trophy in France? Cast your vote in the poll below and tell us about it in the comments!
The two managers have completely different personalities and are set to renew their long-running rivalry in England after the summer - Goal looks at some of their best quotes