Ozil and Alexis were surplus to their teams
As was Cech. Cech wanted to stay in London also. Out of respect he was given a move to a rival.
Benzema is happy at Madrid. Fits into Madrid. Has the galactico look that Perez loves and plays well with CR7. Other than Lewendonski and Suarez, there isn't better options for striker. It would have cost well over €100 just because Real has absolutely no reason to sell.
You know how Perez rolls buying new toys every window. I thought the Reus rumors were true and that Rafa was really considering puttng CR7 in the striker position.
I still say Benz was coming but that scoreless draw with Real 2 weeks ago changed a lot. If they had sold Benzema and bought Reus after that match, they would get killed for doing it with no recognized striker.