Help needed on a baseball question

I was thinking of proposing Mike Moustakas' (5m/4 years) owner for A-Rod (20m/2 years).

Now my concern is that Moustakas is the next Billy Butler in KC, plus in a few years Cheslor Cuthbert (whom I would like to draft in the next minor league draft we have in the spring) will be likely playing 3B which might make Moustakas less relevant. I like getting rid of A-Rod's expensive deal and the German surgeries don't help with the confidence either. I would have to play likely half of A-Rod's contract to make the contracts work but what do you think? Would it be worth it or not?

My Roster:

C-W. Ramos, 1B- Ike Davis, 2B-Cano, 3B- A-Rod, SS-A. Cabrera, OF-D. Young, A. Jones, Joey Bats, UTIL-Nick Swisher

SP-Haren, Sale, Surkamp, Holland, Nicasio, Minor, J. McDonald

RP-Melancon, Hanrahan, and Mike Adams

BN-Harper, Trout, Wil Myers, C. Kelly, M. Banuelos, S. Miller, Moreland, Conger, C. McGehee, D. Lowe, and B. Cecil