Your task as far as the board is concerned is to do the best you can on the field and that is really the only thing you will be judged on. So while sentiment to the older players is laudable, it is unlikely to be the best way for the team to reach the next level.
Manager reputation, which is a large part of the attraction to other clubs, takes while to catch up to on-field success, but if you keep winning, the offers will come.