The Oakland Raiders could be short-handed on Sunday against the Chicago Bears with Tyrell Williams and Clelin Ferrell both missing practice on Wednesday.

Ferrell is currently dealing with a concussion and he has been strong through his first four games racking up ten tackles and one sack.

Williams is currently dealing with a foot injury, and if he can't go that will be a big loss because he has been a favorite target of Derek Carr. So far this year he has caught 17 passes for 216 yards and four touchdowns.

The Raiders have tried to move Williams around to get him more opportunities and he admitted that at times transition was tough without Keenan Allen taking away some of the attention.

That has seen more attention focused on Williams but he knows that he is also still getting open, even with the extra attention.

 “We had Keenan [Allen] out there, so a lot of attention went to him,” Williams said via NBC Sports. “We had a really explosive offense. Here, we have a bunch of new guys trying to come into their own. I’m the guy in the position group who has been in the league the longest, and the guys have seen me play. I feel like I’m seeing attention, but that I’m still getting open.”

The Raiders are facing a tough defense in the Bears and not having a full receiving corps is going to make life a lot harder on Carr and the rest of the offense as they try to move the ball.