Napa, CA — The Oakland Raiders‘ Antonio Brown missed another day of practice this Sunday,  which was expected after  seeing a foot specialist the day before. Brown has missed most of Oakland’s training camp as he battles “sore feet,” per ESPN.

A league source said the team’s level of concern about Brown’s absence remains low after he saw the specialist, and that a possible return to work will be evaluated each day, without a formal timetable for his return.

“I think we’re all disappointed,” Raiders head coach Jon Gruden said on Saturday. “We think he’s disappointed. We’d like to get the party started. We’d like to get him out here. He’s a big part of the team.”

Brown was traded to Oakland from the Pittsburgh Steelers this past offseason. The Central Michigan product has tallied 1000-plus catching yards the past two season seasons.