Ally McCoist has given his verdict on the future of Manchester United forward Marcus Rashford. The Rangers legend and talkSPORT pundit has explained why Rashford needs to leave Old Trafford. So, what has Ally McCoist said about Manchester United forward Marcus Rashford? Ally McCoist urges Marcus Rashford to leave Manchester UnitedWell, former Rangers and Scotland international striker Ally McCoist has been speaking about Marcus Rashford on talkSPORT. The talkSPORT pundit thinks that Rashford needs to leave Manchester United. McCoist has said that the £300,000-a-week (Spotrac) forward looks hap…