Sinclair did not get many first-team opportunities at Liverpool by only making five appearances for the club, scoring one goal in a FA Cup tie against Exeter City.
Given that Liverpool have a number of striking options at the club, the 19-year-old decided not to renew his contract with the Reds and go in search of first-team football elsewhere.
In 2012, Sinclair became the youngest player to feature for the Reds when he made his debut in the League Cup third round tie against West Bromwich Albion at the age of just 16 years and six days.
On his departure, Sinclair took to Twitter to thank the club that gave him his senior bow with the following message:
I'd like to thank everybody at @LFC for all the support and making my 5 years at the club such a great experience. 1/2— Jerome Sinclair (@JSinclair_48) June 30, 2016
I'm proud to have been able to represent a great club and I'd like to wish all the staff and the team all the best for future! #LFC 2/2— Jerome Sinclair (@JSinclair_48) June 30, 2016
For me it's an exciting new chapter and I can't wait to get started with @WatfordFC ⚽️— Jerome Sinclair (@JSinclair_48) June 30, 2016
It will be interesting to see the role Sinclair has at Watford next season, but he certainly stands more of a chance of getting first-team action given that Liverpool have five players ahead of him in the pecking order for a striker role when they are all fit and available.
The tweets suggest Sinclair seemed pretty keen to end things with Liverpool on a good note. Although he may not have made many appearances for them, he still has a place in their record books, at least for now.