Alex Neil will undergo a scan on the ankle injury that forced him off at Charlton Athletic - but boss Alex Neil admits it does not look good for the midfielder.
Pritchard appeared to twist his ankle in a heavy challenge 15 minutes from the end of the goalless draw, and he needed treatment on the pitch before he hobbled off with the help of the physios, with Elliot Embleton coming on to replace him.
Pritchard has been a key player for Sunderland this season and he is someone that Neil knows well, having signed him for Norwich in 2016.
