How many goals would messi score if he was in the EPL?

messi has scored 52 goals this season which is obviously a lot but is it because he is up against quite easy teams (apart from madrid) and he also has iniesta and xavi to help him, i was wondering if messi played for a team like man united chelsea or arsenal in the EPL how many goals would he have scored? i think a bit less but he still would be considered the best player in the world