Arsenal hero Ray Parlour is upset seeing Robin van Persie move to Manchester United.
The Dutch international striker looks all set to tie up a four-year deal at Old Trafford this week, leaving Parlour dismayed.
"It's been years since Arsenal sold a player to Manchester United", Parlour told talkSPORT.
"They were always our massive rivals and I know we sold a lot of players to Manchester City but Manchester United were always our rivals and we didn't want to help them.
"It's a big blow for Arsenal but I'm just hoping with the money they receive from the transfer that Arsene Wenger has got a replacement in mind."