There could be any number of reasons he isn’t being played as regularly as he should, not necessarily because of performance / impact on team. It could be because of the reported obligation, or he may have a bad attitude in training (he has jumped from club to club in his last few years).
On the positive side, because we are relatively safe it could be because we know we want to sign him, and want to keep him ‘under wraps’ a little. The less he is in the ‘shop window’ the better for us when it comes to his signature. Decisions as to whether to select someone are not always purely footballing decisions.