I think Mou would have learnt his lesson from not resting his stars last year with fatigue setting in during the 2nd half of the season. I think Lukaku will obviously start more games than Rashford but the later will definitely have a big role to play off the bench, especially in big games. With his speed coming on late on when others are tired, he will be the difference maker. But other than that I can only see Rashford starting CC, FA Cup, UCL group games once we are qualified (so games 5 and 6) and games against bottom half teams. If we were so confident in Rashford, we wouldnt have gone and spent 75m for another #9. We would have got someone like Hernandez who could have been backup to Rashford.