As far as I know, the Warriors have been exploring the possibility of signing a reserve veteran big man for a few weeks now, and it looks like Howard could be a good option for them. The meetings in the Warriors' front office will definitely be very important for Howard because if he really wants to return to the NBA, he should accept all the terms and the role in the team that will be offered to him.
There's no doubt that Howard will have to accept it, it's a veteran's minimum and it's appropriate for him. And with this physically, I think he will be given the task to just take the boards and intimated anyone inside if they are going to penetrate the Warriors lane and play some D.
This is his role when he was with the NBA champions Lakers back then in the bubble and it's quite fun to see him guarding big centers and given them a hard time even though he is no longer in his prime.
Howard understands his role as a new player joining the team. He isn't in his prime anymore, so he won't be in the starting lineup, which is good for him as it will minimize the risk of injury. The problem the Warriors had last season was allowing too many points in the paint. With Howard on the roster, I believe that will be minimized.
This is great news for NBA fans, especially Warriors fans, as they are on a mission for the upcoming season after the disappointment of last season following their championship win.