The move comes after Craig Disley committed to the club by penning a new one-year deal yesterday.
JP, who made 35 appearances for the Mariners last season, scoring 11 goals, is delighted that Paul Hurst has put his faith in him once again. He said: "It's the only place I wanted to be and fortunately the club made me an offer.
"The manager has shown me solidarity and the fans have been really supportive."
And now the popular frontman is hoping to put the disappointment of the play-off final behind him. He said: Ian Holloway said to me to put it in my top pocket and keep it with you for the rest of next season, let it be the fuel that fires you."
Catch the first interview with JP after he signed his new deal on Mariners Player.