Manchester United fans on Twitter were left worrying after Alexis Sanchez was not on the plane for the club's pre-season tour in America, with no announcement made by United as to why.

The 29-year-old winger had the summer off after Chile's failure to qualify for the World Cup so his no-show at the airport confused United fans further.

However, The Sun have reported that Sanchez will fly out separately at a later date to link up with his United teammates in Los Angeles, thanks to being given a specific pre-season regime by Jose Mourinho to ensure he is at peak fitness as the season starts.

This is all because, although he had this summer off, Sanchez had played for Chile in each of the last four summer breaks from the Premier League. The winger seemed to show signs of fatigue towards the end of last season, as he made a slow start by his standards to life at Old Trafford following his move from Arsenal.

With no clue as to why he wasn't on the plane though, United fans were initially left to worry about Sanchez's future. Check out some of their best tweets here.

[brid playlist="4766" player="12034" title="World Cup 2018"]