“We are visiting some soccer schools, hospitals,” Mata told the official club website. “We are trying to do as much as we can in these three or four days that we will be here.
"Because it's very important for a football player to actually get to know where we are and connect with the soccer fans, and for Manchester United too, so it is a great opportunity for both the club and myself.
“I'm really excited about being in San Diego, which is a lovely place. I'm also looking forward to the game. It's always been great to play in front of the US fans for United.
"I remember many fantastic stadiums and many fantastic memories with them, so hopefully it's going to be one of those.”