Leicester Tigers winger Jonny may miss two Champions Cup matches while Sale's Marland Yarde faces six months out with a dislocated kneecap.
May's shoulder injury he sustained during Leicester’s 23-15 victory against Northampton at Twickenham may rule him out of his club’s opening two Champions Cup fixtures.
However, Sale wing Yarde faces at least six months out after sustaining a dislocated kneecap during the victory against Newcastle.
Scrum-half Dan Robson is also a doubt for the autumn after sustaining an ankle injury during Wasps’ defeat against Gloucester.
