Don't agree that contracts mean nothing, if he signed an extension now then it would be certain that he would be here next season at least. The players will want and need to know his situation before they evaluate what they are doing. As Charlie said, things can change very quickly in football and it's all about having the right people in place at the right time. The last time we had a very successful premier league manager, we didn't back him or improve the squad and we fell like a lead balloon.
If Poch knew he could retain our best players and add to the squad, staying is an excellent prospect and there wouldn't be many better jobs around other than the very elite.