Apparently you can't play prem games on CL nights any longer otherwise FA gets fined which is completely ridiculous rule so that limits the window given FA cup is midweek now.
Perhaps in April sometime. I read if Man. United make semi final of FA cup that will get moved to a midweek so perhaps if Sheffield United are out of the cup by then we could slot that fixture in whatever weekend it is.
Otherwise playing it just after Palace at home could be the best bet.