Tosin is a central midfielder who likes to break up play and keep things simple. As an Under-16 he came into the Manchester United Under-18 side for the latter part of the 2013/14 season and even made an appearance off the bench for the Under-21 side.
Tosin missed the entirety of the 2014/15 season due to a combination of injuries and a lack of official documents that could prove his date and place of birth. With everything cleared up, he returned to action with the Under-18 side in the 2015/16 season, often playing as a narrow winger.
Tosin scored his first Under-23 goal in February 2017 away to Derby County.
In August 2018 Tosin moved to CD Feirense on a free transfer having turned down a new contract offer from Manchester United.