Kell, who began his playing days as a midfielder, first trained with the United Academy in 2008.
Watts appeared in all of the Magpies' 41 matches at under-23 level last term, netting six times.
Previously of Cramlington Juniors, Kell – a former Ponteland High School pupil – identifies Manchester United frontman Zlatan Ibrahimovic as his footballing idol.
He joined Stevenage on loan for the first half of the 2019/20 season, where he got his first taste of senior football, and joined Mansfield Town on a temporary basis for the second half of the campaign. In between, he signed a new contract at St. James' Park, demonstrating the club's belief that he could be an important player in the future.
- Full Name:
- Kell Watts
- Squad Number:
- Date of birth:
- 3rd November 1999
- Place of birth: