Shrewsbury right-back James Bolton is reportedly poised to move to Pompey on a free transfer.
According to the Shropshire Star, the out-of-contract defender is closing in on a switch to Fratton Park.
Bolton moved to the Shrews from Gateshead in 2017.
He made 85 appearances over two season and helped them reach the League One play-off final during his first campaign at New Meadow.
Bolton also netted the winner in Shrewsbury’s 1-0 victory over Kenny Jackett’s side in January 2018.
Salop boss Sam Ricketts wanted to keep the 24-year-old – but he looks set for a move to PO4.
Bolton could be arriving as Nathan Thompson’s Pompey replacement.
The tough-tackling defender is out of contract at the end of the month and has yet to sign a new deal.
Bolton would become the Blues’ third signing from Shrewsbury within 12 months.
Goalkeeper Craig MacGillivray joined on a free transfer last summer, while Bryn Morris moved to the south coast for an undisclosed fee in January.