Pompey have completed the signing of Kelvin Etuhu.
The 23-year-old winger has penned a deal until the end of the season, with the option of another year.
Etuhu will go straight into the Blues’ squad for this weekend’s trip to his former club Cardiff.
Nigerian-born Etuhu was a free agent after being released by Manchester City last March following a jail term for assault.
He was allowed to be brought in by the Football League after Hermann Hreidarsson joined Coventry on Monday.