If I was running the club now, seeing
1) we aren’t going to win soon and aren’t getting £50m from Champs League our rivals are
2) we have a lot of value in older players ..
.. I would start selling the older players. And replace with quality younger to mid-career players. So guys like Aubameyang, Ozil, Sokratis, Lacazette and Xhaka would go. And I would bring in guys like: Upamecano, Sangaré, Aouar, Fernandes, Ziyech, etc.
Basically, we have asset value that will evaporate into thin air before we can launch a title run. We need to get ahead of the problem now. Define our style of play, and go after players will hold and grow squad value better. If we re-sign and keep those older players or let them run their contracts out, it will be malpractice.