The one thing I think Redknapp really did well especially in his last season was generally knowing his best XI. Consequently, everyone was comfortable with their position, the players around them, and their roles. Modric created from deep, Parker broke up play, VDV played off the striker, Lennon and Bale ran at fullbacks, Adebayor held up play, Walker and BAE made overlapping runs and developed good understandings with their respective wingers. Everyone had a specifically defined role that they were very comfortable with and we played the best football in the league until Redknapp's off the field problems got in the way.
We mock the "football is simple" nonsense and for the most part we are right. However, when you send out a group of players that are comfortable with each other and their role in the team then football does become much simpler because everyone knows what they need to do even if it isn't massively tactically complex.
Over the last two seasons we've had almost none of this. We've never really come close to finding a best 11 and we have so many players who have no clue what role they should be playing. The jury is still out regarding the positions and roles of Townsend, Dempsey, Sigurdsson, Dembele, Paulinho, Bentaleb, Eriksen, Chadli, Lamela, and Holtby. How is that we still don't have any level of comfort in what the best position is for a double digit number of our players. It's no wonder we've looked so disjointed so often over the last 2 years. Too many players don't know what their role in the team is supposed to be.
We need a manager who is flexible and comes in and builds a squad around the players that we have. For the most part, every player needs to be assigned a role and position so they are able to get comfortable with their responsibilities. Of course it's good to have a couple versatile utility guys but we have far too many ATM.
Our next manager also needs to sort out a best eleven real quick. The same core of players should be playing 95% of league games. Of course squad rotation is important, but it needs to be done with 1-2 changes per game not the 4-5 changes from game to game we've been seeing (cup games are different I'm referring to league games). A settled first eleven is paramount, just look at Liverpool this season.
Overall, we need some stability. Give players roles, settle your starting lineup, and play a style that fits your players. Under AVB our style was so rigid that we had a terrible time breaking down teams but faired okay against better sides. With Sherwood we are so lacking in structure that we can largely beat teams worse than us due to sheer ability but are completely lost against good teams. The worst part is under both the players look like they aren't comfortable at all with what their role is and what the fuck they are supposed to be doing. We need to find the balance and put our squad in a system and style they understand and enjoy playing.