Liverpool's Joe Allen warms up
Allen, 25, was a major signing for Brendan Rodgers back in the summer of 2012, as after the former Reds manager had moved from Swansea, he took midfielder Allen with him. from the Liberty Stadium to Anfield.
The Welsh international was an important player under Rodgers, but seemingly wasn't fancied by his replacement Jurgen Klopp, and Allen has now moved on to join Stoke City.
Allen's Anfield exit comes just weeks after he proved his quality on the international stage with Wales, serving up a number of top drawer displays to help his side into the semi-finals of Euro 2016.
Now, Allen is off to join Stoke and their Welsh manager Mark Hughes, potentially forming a superb partnership with Giannelli Imbula in the heart of Stoke's midfield.
As excited as Stoke fans may be by the signing of Allen, Liverpool supporters don't appear to be quite so keen with the midfielder's move.
Fans took to Twitter on Monday evening to react to Allen's exit, with many admitting they were gutted by the deal, given how Allen had become something of a cult hero at Anfield in 2016.
Liverpool's Joe Allen celebrates scoring their first goal
Others believe manager Klopp has made a mistake, as Allen still had a role to play having starred at Euro 2016, and should be in the Liverpool team ahead of Jordan Henderson.
Some simply wished Allen the best of luck at Stoke after four years on Merseyside, but it's clear that this transfer has left many supporters unhappy.
Here are some of the reactions from Liverpool fans after Allen left the club to join Stoke on Monday...
Gutted to see Allen go. He had a role to play in the squad. Was fantastic at the backend of last season. #LFC— Josh Hardman (@JoshuaHardman) July 25, 2016
All the best to Joe Allen, say what you want about him but he always put 100% in when he got a chance for us! He'll do well at Stoke #LFC— Jay Smith (@jaysmith93) July 25, 2016
Absolutely gutted Joe Allen has been sold :( he'll do a quality job at Stoke though, too good to be a benchwarmer #LFC— Jordan Ward (@JordanWard1992) July 25, 2016
Haven't been this gutted about a player leaving Liverpool for a while. Gutted to see Joe Allen leave #LFC— Simon Hughes (@SimonH93) July 25, 2016
Joe Allen's been sold.— Patrick (@LFC_Patrick) July 25, 2016
Absolutely gutted. Under any other manager I'd be outraged but in Klopp we trust! #LFC
I'm devastated Allen has gone from Liverpool one of the best players at the euros in my eyes he gets into the team ahead of Hendo #LFC— Michael Robins (@mickeybins1) July 25, 2016
Think letting joe Allen go was a big mistake just after the euros he just had— Ian Towler (@ian_towler) July 25, 2016
Would you have liked to see Liverpool keep Joe Allen?