Pompey have completed the signing of 28-year-old midfielder Ryan Tunnicliffe.
He has put pen to paper on a two-year deal – with the club holding an option for a further 12 months – after leaving Luton.
Blues boss Danny Cowley said: “Ryan had a good footballing education at Manchester United and has spent the past eight seasons playing regularly in the Championship.
“We want to be a team that performs with a real energy and high intensity – those qualities are really important to us.
“He’s an attacking, technical midfielder who plays with his head up, has fantastic penetration and is really progressive with his passing.
“There’s the ability to play clever reverse and slide-rule balls, so I’m sure our attackers will benefit from his vision.
“We see real grit, determination and dynamism in him. He’s incredibly athletic and also deceptively quick.
"We’ve had fight off Championship clubs, but he really brought into the project that we have here at Pompey."
“Ryan has played with Shaun Williams before at Millwall, which I think helped him make the decision.
“We’ve had fight off Championship clubs, but he really brought into the project that we have here at Pompey.
“He is certainly someone who we feel can help when we’re trying to break sides down and we’re looking forward to working with him.”
Tunnicliffe progressed through the ranks at Old Trafford and made a couple of senior appearances for the Red Devils.
He had several spells out on loan before signing for Fulham and briefly featuring for them in the Premier League.
Millwall was his next stop in the summer of 2017, with Tunnicliffe spending two years at The Den and then moving to Luton.
He made a total of 68 appearances in two years with the Hatters, helping to establish them in the second tier of English football.
Really excited to have been given the opportunity to play for such a big club! Can’t wait to get started!! https://t.co/xkoYl4xeJt— Ryan Tunnicliffe (@RyanTunnicliffe) June 26, 2021