I think my earlier info regarding the offer sheets and levels of compensation was wrong. Fortunately, we have General Fanager to correct my errors. They have a nice tool that shows the compensation levels and what teams can make offer sheets at the different levels.
http://www.generalfanager.com/draftpicks/offersheets
We're really looking at the $7.3-$9.1 range. So teams to worry about are- Anaheim, Arizona, Buffalo, Calgary, CBJ, Edmonton, LA*, Montreal, NYR, Ottawa, Philly, Tampa Bay, Toronto and Washington.
* I'm nearly positive LA is out. He's not going there anyways, but their first round pick in 2016 belongs to Carolina from the Sekera trade.
I think an offer sheet is very unlikely since they basically never happen. When they do, they've all been matched, with the exception of Penner. Anyways, from that group, I'd say only really Buffalo, Carolina, Columbus and Edmonton are potential hreats. They all have the cap space and need, though Carolina and Columbus operate on internal budgets so I'd imagine a massive offer sheet from either of them is unlikely. Edmonton and Buffalo have the money and cap space. Maybe a wild card like Philly or Toronto if they clear money (Phaneuf/Kessel) out of there.