United and Everton safely through
FA CUP:Ireland midfielder Darron Gibson was on target as Manchester United followed Everton into the FA Cup quarter-final with a 4-1 over Derby Count, shortly after the Toffees ended Aston Villa's impressive unbeaten run at Goodison Park.
Neither will meet eachother in the next round, however, after Alex Ferguson's side were drawn against the winners from Swansea and Fulham, while Everton face a trip to either West Ham or Middlesbrough.
Nani and Gibson effectively wrapped up the win for United in a first half in which Cristiano Ronaldo had a goal ruled out for offside.
Ronaldo did eventually notch his 15th of the season, with Danny Welbeck rounding off the scoring after Miles Addison had headed home Derby's sole consolation.
Everton reached the last eight for the first time since 2002 with a convincing 3-1 victory over an Aston Villa side who had not lost domestically since early November.
Jack Rodwell fired Everton into an early lead before James Milner equalised from the spot, all in the first eight minutes.
Mikel Arteta's penalty reclaimed the lead before the break and Tim Cahill sealed the win with 14 minutes left.
One of Villa's most impressive victories in their unbeaten run was a 3-2 victory over Everton in December, but the Toffees have lost just one of 13 since that game and look like a team that believe they are destined for Wembley.
Chelsea are the only other side guaranteed to feature in the next round after yesterday's win over Watford and they will await the victors from Blackburn Rovers's replay with Coventry.
Cardiff or Arsenal will face one from Burnley, Sheffield United or Hull City.
FA CUP quarter-final draw
Blackburn/ Coventry v Chelsea
Swansea/ Fulham v Man Utd
Cardiff/ Arsenal or Burnley v Sheff Utd/ Hull
Everton v West Ham/ Middlesbrough