Pompey have completed the double signing of Amine Linganzi and Liam O’Brien.
The duo, who have spent time at Fratton Park as triallists, have signed on initial month-long deals.
Central midfielder Linganzi appeared in pre-season friendlies against Bournemouth and Bognor, while was an unused substitute for trips to Salisbury and Bristol City.
Goalkeeper O’Brien, who spent time with Pompey’s Academy before leaving in the summer of 2010, has been back with the Blues since last week.
Both are in Paul Cook’s squad for tomorrow’s trip to Coventry City in the EFL Cup.
However, Linganzi’s availability is subject to international clearance, having previously played in France.