MANKATO, Minn. -- The Minnesota Vikings will put cornerback Captain Munnerlyn and safety Andrew Sendejo on the physically-unable-to-perform list at the beginning of training camp, but coach Mike Zimmer said he doesn't expect either player will be out long. Tight end Chase Ford, who has a broken left foot could miss significant time.

Munnerlyn, Zimmer said, has a hamstring injury, while Sendejo is still dealing with the lower back ailment that kept him out for most of the Vikings' spring program. Ford showed up to camp in a walking boot on Thursday, and Zimmer said the tight end had surgery on his foot. He didn't have a timetable on Ford's return, but it's worth noting that tight end Kyle Rudolph missed the last two months of the season with a broken foot last year.

Zimmer made it clear he wasn't happy with Ford tweeting about his injury, adding he'd stressed the importance of discretion on social media in his opening remarks to the team on Thursday evening. "We actually had that meeting last night and then it gets tweeted last night or today," Zimmer said. "They must not have been paying attention in the meeting. So I will fix those things."

The Vikings also had one player not pass their conditioning test on Thursday, Zimmer said. That player won't be participating in the Vikings' first practice on Friday afternoon, though the coach wouldn't say who it was on Friday morning.

The Vikings also released receiver Josh Cooper and tackle Matt Hall on Friday morning, signing receivers Ty Walker and Andy Cruse to take the two open spots on the roster.