The Bills are now a third of the way toward having their entire draft class under contract. Buffalo signed seventh-round draft choice 
“It’s awesome,” Calloway told Buffalobills.com moments after signing. “It’s a relief to finally actually feel a part of the team when I signed that contract. It’s a relief. I’m thankful. Thirty-two teams had a chance to draft me and Buffalo did and I’m glad that they had enough faith in me that I could help the team in whatever way they need me to.”
Calloway (6’7” 315) was the second of two seventh-round draft picks made by the Bills this past April. The offensive lineman was initially projected by Buffalo’s coaching staff as a guard, but to this point in OTAs and the most recent voluntary minicamp offensive line coach Joe D’Alessandris has had Calloway primarily lined up at right tackle.
“Coach ‘D’ made it perfectly clear to me that I need to know both positions and be able to play both,” said Calloway. “I did rookie camp at guard and after that I came back for OTAs in May and he just said that watching college tape he saw I was playing a lot of tackle and that I’d probably be more comfortable at tackle. So they kind of want me to learn the system as a tackle for now and be able to switch and go wherever.”
The Iowa product has fared well on the strong side, having played tackle for most of his last two collegiate seasons.
To make room for Calloway on Buffalo’s roster the Bills released cornerback
Calloway is the third of Buffalo’s nine draft choices to sign with the club joining