Hull boss Barmby hails passion of on-loan Arsenal keeper Mannone
The Tigers are in the Championship play-off zone - having let in just three goals in a 10-match unbeaten run since Mannone's arrival on loan in January.
Barmby said: "The main thing that I liked was that he was desperate to play for us again.
"As soon as I asked about him, he was straight on the phone. He said he loved his time at the club last season and asked when he could get here."