Crystal Palace's Daniel Munoz, left, shakes hands with manager Oliver Glasner, right, after being substituted during the FA Cup fourth round match between Doncaster Rovers and Crystal Palace in Doncaster, England.

Crystal Palace manager Oliver Glasner gives instructions to Ben Chilwell during the FA Cup fourth round match between Doncaster Rovers and Crystal Palace in Doncaster, England.

Crystal Palace's Justin Devenny, center, celebrates with his teammates Daniel Munoz, right, and Jean-Philippe Mateta, left, after scoring his side's second goal during the FA Cup fourth round match between Doncaster Rovers and Crystal Palace in Doncaster, England.

Doncaster Rovers' Rob Street, left, and Crystal Palace's Chris Richards, right, challenge for the ball during the FA Cup fourth round match between Doncaster Rovers and Crystal Palace in Doncaster, England.

Doncaster Rovers' Billy Sharp, left, and Crystal Palace's Chris Richards, right, challenge for the ball during the FA Cup fourth round match between Doncaster Rovers and Crystal Palace in Doncaster, England.

Crystal Palace's Justin Devenny, left, and Doncaster Rovers' George Broadbent, right, challenge for the ball during the FA Cup fourth round match between Doncaster Rovers and Crystal Palace in Doncaster, England.