The Buffalo Bills have one of the most dynamic running backs in the NFL in LeSean McCoy, who helped carry the team to two consecutive rushing titles. Last season, McCoy was assisted by backup Mike Gillislee who had a breakout season, rushing for 577 yards and eight touchdowns.

Gillislee entered the offseason as a restricted free agent and Buffalo placed a fifth-round tender on the once-journeyman running back, but ultimately signed with the New England Patriots. Many fans were outraged at the decision to let a player with his production depart, but Pro Football Focus, an analytics/advanced website doesn’t seem to believe that Gillislee’s departure will have much of an impact.

In Jeff Ratcliffe’s ‘Fantasy 5’ column, Buffalo’s fifth-round selection from the 2016 NFL draft was mentioned as a player that fantasy football players should be well aware of.

Williams didn’t see much playing time as a rookie as he dealt with injuries while being buried on the depth chart, gaining just 94 rushing yards and one touchdowns on 27 carries in 11 games.

Williams likely would have been selected higher in the draft had he not suffered an injury that caused him to miss his senior season after finishing his career with the Arkansas Razorbacks with 2,321 rushing yards and 16 touchdowns while averaging 5.7 yards-per-carry.

Here’s what Ratcliffe had to say about Williams and why Buffalo fans should be optimistic despite the loss of Gillislee.

In case you haven’t been paying attention, Williams is now LeSean McCoy’s primary backup in Buffalo. That’s been a valuable position over the last two seasons with both Mike Gillislee and Karlos Williams providing strong fantasy production. While neither player was an every-week option, they both finished as a top-36 fantasy running backs. They also were both RB1s in games that McCoy missed. With Gillislee now in New England and Karlos Williams not currently on a roster anywhere, Jonathan Williams is the next man up. A 2015 fifth-rounder, Williams was extremely productive at Arkansas. He topped 1,000 yards on the ground in 2014 despite splitting time with Alex Collins, but his draft stock slipped after missing all of 2015 due to injury.

Williams certainly proved capable of making plays in the preseason and will obviously have to learn the nuances of the offense before he can develop into a reliable, competent rotational running back, but he showed patience, great vision and burst throughout his collegiate career and has the skills to thrive in offense coordinator Rick Dennison’s zone-blocking offense.