It's nearly impossible to answer this without knowing how much it would cost to keep any of your current players. Say Braun was $45; I wouldn't trade a $5 Hosmer to acquire that. In any event it will probably take some of your most desirable low cost keepers to get a sniff. There was a thread a day or two gauging Hoss's worth in a dynasty and some of us were squarely on board with not trading Hosmer for Hanson in that scenario. Is Bumgarner also a $5 keep? If so he'd be a good starting point but it would still likely take a sexier keep than Dee Gordon to get this done.
We do tons of trading in our roto keeper league. Just considering other 1B, Pujols has moved 4 times so far this year, Miggy 3X, Votto has been traded, A-Gonz twice, Fielder, Howard 4X etc... Hosmer was drafted early but has yet to be traded so I can't give a definitive comp. Some of my recent Hosmer offers that were rejected might help though. Braun for Cutch + Hoss, CJ Wilson + Des Jennings for Hoss, Utley + Des Jennings for Hoss + Polanco. and Pineda for Hoss. I'm sure most other owners also offered on him but I only know the offers I made that were rejected. Young studs are cheaper to keep in our league too so they typically draw big payouts.
MVP****NL11,AL07,AL05,NL04,ALNL03,ALNL02,NL01,ALNL00,AL99,ALNL98,ALNL96 RIP Cammi
Cmon Bud, NOW is the time to sack up and force feed an Olympic style drug program down Fehr's fat throat. Save OUR game from these blatant cheaters!