Jose Mourinho took over Manchester United this summer and his first big challenge is dealing with the phenomenon that is Pokémon Go.
He has clamped down on the usage of the app, telling players that they can't use it within two days of a match. An unnamed source told The Daily Star that "he wants the guys to leave it alone and concentrate on the tactics he and his staff have been working on in the days before."
Perhaps Pokémon Go use will be a reward for a good performance, in which case Manchester United fans may have many good days to look forward to. Imagine trying to wrestle control of a gym near Old Trafford from Wayne Rooney or Zlatan Ibrahimovic!