Back in 2016, Liverpool reluctantly agreed the sale of Jerome Sinclair.
With his contract expiring at the end of the 2015/16 season, Sinclair decided he wanted to leave Liverpool.
Watford won the race for the in-demand striker’s signature with a £4m compensation package agreed, according to BBC Sport.
At the time, Liverpool were disappointed to lose one of their most promising young players.
The England youth international was thriving for Liverpool’s academy team and had played five senior games, scoring once for the Reds.
But now, with Sinclair struggling at League One side Sunderland, £4m looks like great business from Liverpool.
The 22-year-old failed to break into the Watford first-team in two years with the Premier League side.
He scored one goal in 11 games and had an unsuccessful loan spell at Birmingham City, failing to find the net in his five Championship outings.
In a bid to ignite his stalling career, Sinclair headed to Sunderland in the summer.
But he has failed to rediscover his form at The Stadium of Light and his performances have been widely criticised.
With just two goals in 17 appearances, Sinclair is struggling for the Black Cats and he is being outshone by teenager Josh Maja.
Although they may have regretted letting Sinclair leave at the time, Liverpool fans will be relieved they managed to get £4m for the misfiring striker now.