Murray should play in Barcelona according to this answer :
Q. When will you link up with Ivan again?
ANDY MURRAY: Miami, regardless, was what the schedule is. I was never going to do the whole schedule with him. The plan is we did the period after Australia, then he's going to be in Miami.
Obviously depending on Davis Cup I might stay there after the tournament and practice on the clay a bit there. I'm not sure yet.
Then he's going to be in Monte Carlo, Barcelona, and then the week after Barcelona as well I'm going to do some training. Spend a lot of time together between now and the French Open.