At the player presentation in the Southbank last Saturday the 31 members of the First team squad were introduced. Kear then brought out 7 players (including Josh) and said that these were the Reserve team squad for 2019. Presumably the side will be padded out with fringe first teamers, academy players and trialists. JK explained that these players would not have squad numbers until they had played a First team game (league or cup) in 2019. He said he'd discussed it with the 7 players and all had bought into it. I don't know if Josh has played first team previously.
Of the other 6 I think 5 are still academy players who haven't yet played first team and one is a new signing.
Anyway, Josh was there on Saturday and is still very much at the club.