Loan defender Ryan Inniss has been sent for an x-ray after being stretchered off during the win over Coventry City.
Inniss was replaced by Ryan McGivern and manager Rob Page commented: “It’s not great when you see a young player stretchered off like that but he is having the best care and is in the best place.
I don’t know whether he landed awkwardly on it or whether it was the contact, but the physio said it was his ankle…
“I don’t know whether he landed awkwardly on it or whether it was the contact, but the physio said it was his ankle.”
Vale are keen to keep the Crystal Palace defender until the end of the season but that decision would obviously rest on the extent of damage Inniss’ ankle has sustained.