Gavin Bazunu already has plenty of League One experience under his belt.
The teenage Manchester City keeper made 29 third tier appearances during a loan spell with Rochdale last season.
Now he is looking for more regular action after being borrowed by Pompey for the 2021/22 campaign.
And Bazunu is hoping to build on his time at Spotland after being impressed by Danny Cowley’s plans.
The 19-year-old said: “I can’t wait to get started and now I’m looking forward to meeting the rest of the lads.
“The manager said all the right things when he spoke to me about how we’re going to play and how he’s going to go about things.
"I’m trying to be a modern type of goalkeeper who’s good with his feet and can be like an extra man when we’re in possession."
“I’m really excited to get everything completed and I’ve been looking forward to this for a few weeks now.
“I’m trying to be a modern type of goalkeeper who’s good with his feet and can be like an extra man when we’re in possession, although the main job is still keeping the ball out of the net.
“Rochdale was probably the best loan I could have gone on for my first one. It was a brilliant experience and I got a lot of game time.
“There were plenty of crosses and shots for me to deal with, so I really enjoyed the responsibility and thought I improved a lot.”
Despite his age, Bazunu has already collected four senior Republic of Ireland caps and featured in their June friendlies against Andorra and Hungar.
He said: “You learn from the professionalism of the players at that level, as well as the speed in training and the games.
“I’ve met Ronan on the last two international camps and so I’m looking forward to working with him again.”