âAlexis Sanchez's move to Manchester United was one of the most hotly followed stories of the January transfer window. Therefore, it's no surprise the official announcement of the Chile international's transfer to Old Trafford went viral instantly. The video, which features Sanchez appearing to play 'Glory Glory Man United' on the piano, has been retweeted over 157,000 times at the time of writing, with over 200,000 likes.