I don't know how your league works exactly but i would be tempted to do it if i could replace Putz with a closer.
Felix will be solid and will only improve with time
Zim is an adequate replacement till Arod returns
Ichiro is getting older but has some years left in him
Closer icing on the cake IMO
Otherwise I'd wait till Arod returns and then shop one of the two; you will probably get more if you can/will wait.