The Frenchman, on loan from Chelsea, has enjoyed a fine spell on Merseyside this season.
Jagielka said: "He's been brilliant.
"He's come and wanted to play more games. He had a bad injury a few years ago and so for his own career and development that's what he wants.
"He's been brilliant, and the situation with Chelsea will probably play some part with where he is next season but we'll have to wait and go from there."