Manchester United forward Marcus Rashford faces an uncertain future at the club, which had recently seemed unthinkable. Marcus Rashford‘s career at Manchester United began in a spectacular manner, travelling on a fast-track one-way trajectory from the academy to the very top. But from around his third season, and Jose Mourinho‘s second, Rashford has been caught up on the never-ending rollercoaster at Old Trafford, where his career goes up and down with alarming inconsistency. Last season was the peak, in which he struck a career best 30 goals. Rashford also signed a new contract, earning a sta…