The 18-year-old midfielder is a product of the Portsmouth academy and is very highly rated at Fratton Park.
Jewitt-White made his League One debut in Pompey’s 2-1 defeat against Peterborough on 28th January by coming off the bench as a substitute in the 86th minute of the game.
Mousinho insisted that he knows what young Jewitt-White is capable of and stressed that his decision to involve the midfielder in the Peterborough game was due to the player’s merits.
The Portsmouth boss also stated that Jewitt-White will no longer be going on a short loan and stressed that he wants the player to be around the first-team to develop his skills.
“As an 18-year-old, you’re probably trying to catch the eye of a new head coach coming in and Harry trained well on Thursday and Friday and was in the [Peterborough] squad on merit”, Mousinho told The News.
“We stuck Harry on at Peterborough away when they were firing with a really good side and 2-0 up at the time, but I wouldn’t have thrown him on if I didn’t think he was capable.
“Harry won’t be going out on loan again in the short-term, the important thing for him is he’s around us every day, training with the first-team and putting himself under that strain and stress.
“We are looking to have him here and are keeping him about.
“Harry has a promising career ahead of him.”
Jewitt-White went on a short loan to Gosport Borough last summer, which ended in January and now he will ply his trade under Mousinho at Fratton Park.