Another trial coach?

There were some noise last few days that former world nr. 1, Roger Federer, might team up with Darren Cahill, who used to work with Andre Agassi. Now, it seems to be true. Roger and Darren are currently working together in Dubai. It is still a trial, but it may get more formal soon.
Roger, you are such a champ, do you really need a coach? ;)

~shaw