Jeffery, who is only under contract through 2015, is the favorite to assume the No. 1 wide receiver role previously occupied by Brandon Marshall.
“I’ve liked what he’s done and like the way he competes,” Fox said. “He’s got a big wingspan and a big ball radius as far as plucking catches away from defenders. I’ve liked what I’ve seen.”
In three years with Chicago, Jeffery has 198 receptions for 2,921 yards and 20 touchdowns over 42 games (36 starts). He became only the fourth player in franchise history to record consecutive 1,000-yard receiving seasons and has eight career 100-yard receiving games. Jeffery was not entirely healthy for much of 2014, but ranked in the NFL's top-15 in receiving touchdowns, receptions and receiving yards.