I feel we really need some height and strength in our team. One solution could be to use Busi in Xavi's position. He is the most similar to Xavi we have by a large margin IMO. Busi is ready to dictate play from a more advanced position while Song has impressed me as DM.
Our play is based on quick minds, letting the ball do the work. And Busi is superior to any player in the world in that regard. His anticipation is second to none. He is two steps ahead of everyone and knows when and where to pass the ball, even before he has received it. He also used to be an attacking mid during his years in La Masia before Pep converted him.
The gradual phasing out of Xavi has to happen, playing Busi at CM and Song at DM, players who are basically never injured, tall and in their prime years, we can actually further develop our style and correct some of our weaknesses and at the same time the pain of Xavis absence will be less severe than other options. I certainly dont think Thiago is anywhere near Xavis level and wont ever be.