Mourinho has won the league title during the second season of each of his past 5 managerial positions; Porto in 2003 (or 2004 in his second full season as he joined midway through 2001/2002), Chelsea in 2006, Inter in 2010, Real Madrid in 2012 and Chelsea again in 2015. With the strength in depth of Man Utd's squad already, including a lot of talented young players, and the fact that they will inevitably spend a lot of money over the summer, and I think that there is an excellent chance that he will continue that trend next season. I still think that they have underachieved in the league this season as they should have been closer to title contention with their squad and options, but I'm sure that they will be the real deal next season. Regarding the title race this season, I would love to see Spurs overhauling Chelsea, but I think that Chelsea will win enough points from their remaining games to hold them off. Spurs look so well balanced combining exciting attacking play with a rock solid defence, and I really hope that Pochettino stays there for a long time to come.