A measly 360.
180 in Monte Carlo, 90 in Barcelona, 0 from Madrid (didn't play) and 90 from Rome.
By comparison, Federer is defending 1360, Nadal 2590 and Djokovic 1380.
So even though he will fall back to #3 after Monte Carlo if he doesn't make the QFs (and if he doesn't make the SFs, he will fall back to #3 after Barcelona instead, assuming he's not playing Barcelona this year), he should still comfortably be #2 at RG due to Madrid - Federer will struggle to defend his 1000 points (although with a lucky draw he could definitely make the final), whilst Murray has a chance to get some significant gains.
Nadal will definitely be the Wild Card during the clay season - anyone drawing him in the QFs bar maybe Djokovic are surely facing a QF exit, and 'only' 180 points.
Thanks for this breakdown, it's really helpful. Given all of Andy's talk about more consistency especially on clay, I'm thinking he'll go more deeper into these tournaments than he did last year...