Bills’ Gray fights for a role at tight end

Buffalo Bills tight end MarQueis Gray (48) rushes for a first down against New England Patriots outside linebacker Jonathan Casillas (52) in the fourth quarter at Gillette Stadium in Foxborough, Mass. on Sunday, Dec. 28, 2014. (James P. McCoy/Buffalo News)The Buffalo Bills won’t release an official depth chart until sometime during training camp.

For now, though, here is a good idea of how things look at tight end: 1. Charles Clay. 2. Everyone else.

“It is a good battle,” Bills coach Rex Ryan said of the competition among MarQueis Gray, Chris Gragg, Nick O’Leary and Clay Burton to earn reserve roles behind Clay. “They’re each a little different in the physical attributes that they bring, but…