Manchester United legend Gary Neville feels Crystal Palace will give his old team some trouble this weekend.
Palace travel to Old Trafford on Saturday with United lying tenth in the top-flight following their worst start to a season since 1986.
Neville said: "I think they will cause United problems because that front four are quick, strong and they will get more space to run into.
"Sunderland dropped off a bit deeper and got men behind the ball, but Palace are a team that need and like space.
"At times the ball got stuck under their feet, the final pass wasn't always great and they need to polish things up before people say they are fantastic.
"They were a bit erratic in the final third (against Sunderland).
"But if he (Neil Warnock) plays the same four on Saturday or the ones that came on they will cause problems because they will vast space to run into and United have defensive problems."
For the big stories and the banter follow us on Twitter: @tribalfootball