Has Michael Crabtree's market been set?

ESPN Insider Mike Sando recently ranked the potential 2015 receiver free-agent class, which could be very strong.

After polling coaches and general managers, Sando ranked San Francisco 49ers receiver Michael Crabtree as the No. 3 potential free-agent receiver after this season. Green Bay’s Jordy Nelson was No. 4. Scratch Nelson off the list. He has reportedly agreed to a four-year, $39 million deal with an $11.5 million signing bonus.

Since Sando’s poll suggests the league prefers Crabtree to Nelson, you would have to think Crabtree will get, at least, what Nelson has agreed to.

The 49ers want to keep Crabtree and perhaps this deal will give both sides some inspiration to get a deal done now. Even if Crabtree doesn’t extend, there is a chance the 49ers could give him the franchise tag next offseason.

In other 49ers news:

There have been some reports the 49ers are concerned about the knee injury Kendall Hunter suffered Friday in practice. He left the field on his own power. But there is worry because of the way the injury occurred. He is undergoing further examinations.