Coach Dennis Allen announced the diagnosis on Wednesday after the team got the results of a second MRI on the injured arm. Allen said Veldheer will be a candidate to be put on the injured reserve list with a designation for return, which would require him to miss at least the first eight weeks of the season.
Veldheer is perhaps Oakland's best player on offense at one of the most important positions as the protector of the quarterback's blindside. Alex Barron will get the first shot to replace Veldheer. Barron has not played a game since 2010.