I think so,
, he's got 37 now, there is potentially 24 games to go, as I say I took out the CL final and 2 other games. Then at his rate in 2015, well I took out Anoeta, as he came on as a sub, and that was before his god mode initiated.
So he's got 14 in 10, 1.4 x 21 =29.4, add the 37 and that's 66.
edit -incidentally if he went at the rate of his season overall he'd still make 60, and let's be honest Messi is capable of doing better than 14 in 10, so perhaps he can accelerate and reach 70. Either way he's gonna get a lot of goals once more.