How many teams are in this league? if it's 14 or more, I'd keep LaPorta, but honestly, if it's a 12-team or less and it's a NON-Keeper, I'd take Lindstrom.
If you look out there in most 12-team or less , non-keeper leagues, there are a TON of OF's who can put up similar #'s to LaPorta that are probably on the WW.
Yes, I know he'll get 1b eligibility soon as well, but 1b is probably the deepest position this year anyway. You could really use the help @ RP and you already have a decent OF.
Now, I might aim a little higher than Lindstrom, but even still, I think I'd make that offer