As far as I'm aware, he's not under contract and is with us on a week to week basis in order that he can take up a better option if one comes knocking.
That is my understanding as well. He turned down a full contract with us but would play on a weekly basis, putting himself in the shop window. If no buyers came along he would stay until taking up a decent RU contract in the autumn. Presumably the money on offer in our contract fell short of what he wanted/needed to live on.