He will be a premium rental if it comes to that and the cost will obviously be very high. He'll probably fetch at least a 1st, a top prospect, a depth player and another middling/decent prospect.
The Pens can offer a 1st, one of Despres, Morrow, Bennett, Pouliot and another piece or two. I'm just not sure they have a young depth player that's appealing since Sutter won't be moved for a rental and the rest of the depth guys like Kennedy, Jeffrey, Tangradi are kind of meh for various reasons.
there are more to a player then stats... Perry has an impressive resume. Im sure hed get around the same return as a kovalchuk.
While I understand that, if you took Corey perry now and Ilya kovalchuk when he was traded and told the league that both of them were a available for trade (let's hypothetically say they're both pending UFAs and need to be signed) teams are going to gun harder and give up more for the 2 time 50+ goal scorer, 5 time 40+ goal scorer, 5 time 80+ point scorer with 2 seasons of 90+ points than the guy who's had 1 90+ point season and 1 50 goal season and has never broke 40 any other year.
Corey perry is a great player and I would love him on the flyers, but it's kind of wishful thinking to assume he's going to get the same return kovalchuk got, especially in a HEAVY defenseman market.