I think we need a mix of both really. Absolutely need a right sided forward, midfielder and 2 full backs who would be ready to come in and be a (big) improvement on what we've got there atm.
Summer for us is as close as you really get to a blank slate in football. Has to be about balance and planning for both the present and the future. Most young players need time and patience to fulfill their potential, and the only way you can give them that is to have reliable senior pros there to take the pressure off them.
Many lessons to be learned from the failings of the moshiri era, but a big one for me is looking at players like Lookman and Antonee Robinson and how they were wasted by us.