Unless you have a crystal ball you can't know that
How do you view Rashford as a senior player? He's not just the kick and run player you once thought he was im sure. Greenwood has a lot to do to actually live up to the hype or what Rashford has achieved thus far in the senior team, including that impressive start with 4 goals in two debuts, close to 50 career goals at 21 and not far off Rooney's tally at the same age. Do you think Greenwood can have that immediate impact or are you thinking more long term overall peak potential? Greenwood is very exciting, but players like Januzaj, Wilshere, Morrison, Kieran Richardson, Macheda, Djordic, Daehli, Pearson, Ben Thornley, Possebon, Mads Timm and even the forgotten below the rador signing Angelo Henriquez were all highly thought of young players and it came to naught.