Pompey have completed the signing of 20-year-old forward Jayden Reid.
He has put pen to paper on a one-year deal – with the club option of a further 12 months – after leaving Birmingham at the end of last season.
Reid has recently been training with the club and appeared in the pre-season matches at Havant & Waterlooville and Bristol City.
Blues boss Danny Cowley said: “Jayden is an exciting young player with a lot of potential. He’s a good dribbler and has pace, athleticism and energy.
“Also, which is important for us, he has a love for the game and it’s been enjoyable working work with him over the past week or so.
"Jayden is an exciting young player with a lot of potential. He’s a good dribbler and has pace, athleticism and energy."
“We’re looking to put a group of talented young players together that have real potential – and Jayden joins Haji Mnoga and Liam Vincent in that bracket.
“There’s a lot to work with, but also a lot to work on. The main thing for us is that we can see has the attitude of wanting to learn and develop.
“The young players have an infectious enthusiasm and they drive up the standards in training every single day.
“We want that balance of youth and experience to create an environment where everyone’s improving all the time.”
Reid progressed through the ranks at Manchester United and Swansea before signing for Birmingham in 2019.
He made four Championship appearances for them and spent time on loan with Barrow and Walsall last season.