Newcastle United legend Rob Lee is fearful that the Magpies may come to rue the decision to allow Adam Armstrong to leave the club.
The 21-year-old has joined Blackburn Rovers on a permanent deal, signing a four-year deal with the Lancashire club.
United will receive £1.7 million with the fee potentially rising to £3 million with add ons.
But former Magpie midfielder Lee is less than happy with the sale of the centre forward.
Adam Armstrong felt it was the 'right time' to leave Newcastle United
Taking to social media, Lee wrote: “Newcastle hardly have an abundance of goalscorers these days. Amazed. Adam Armstrong never given a chance!!! Hope we don’t regret that.”
Replying to a fan who believes Armstrong isn’t good enough for the Premier League, Lee responded: “How do you know not been given a chance yet! He scores goals wherever he goes.”
Speaking after joining Blackburn, where he spent the second half of last season and scored nine goals, Armstrong said: “It hasn’t quite sunk in yet, because I’ve been at Newcastle all my life, but I’m sure I’ll settle in quickly.
“The lads have been texting me every day since I left, asking when I was coming back!
“It’s nice to feel wanted and it’s nice to feel at home, so it was a pretty easy decision in the end.
“It’s what’s best for me, and both me and my family think it’s the right time to move on and challenge myself somewhere else and I don’t think there’s a better club than Blackburn Rovers to do that with.
“I won’t worry too much about leaving Newcastle because I’m at another great club and I can get my head down now, really kick on and show people what I can do.”