The team announced the signings of offensive lineman Kevin Murpy and defensive lineman Ernest Owusu, both of whom were with the Vikings during training camp, and confirmed the signings of receivers Chris Summers and Tori Gurley.
On Saturday, the team announced the signings of running back Jordan Todman, cornerback Bobby Felder, defensive tackle Chase Baker and offensive lineman Tyler Holmes to the practice squad. All four of those players were with the Vikings during training camp.
The two receivers signed were the only players brought in from outside the organization, and both offer big targets on the outside if they can develop to the point of promotion to the 53-man roster.
Gurley was on the Packers practice squad last year and with them in training camp but was among their final roster cut-down to 53. The 24-year-old is 6-foot-4 and 232 pounds.
Summers, a 23-year-old rookie from Liberty, is 6-foot-5 and 213 pounds. He caught three passes for 62 yards in the Chicago Bears' first two preseason games.
Carlson said he expects to play Sunday after missing the entire preseason with a sprained medial collateral ligament in his right knee, but said it is ultimately a coach's decision.
"He's been pretty good. We need to get him through this entire week," Frazier said. "We've had him on a limited basis so we need to get him through this week healthy and see him do some things and let our quarterback get comfortable with him as well, so there's some things that we need to see along with Christian that will make us all more comfortable."
Frazier said he expects Schwartz will be ready for the regular-season opener.
"We need to see him practice this week. He's missed a ton of time, as you know. Right now he's one of the guys we expect to be up on Sunday, but we need to get through some things in practice because there are some unknowns so it's hard to answer that until we have a practice on Wednesday," Frazier said.
Tim Yotter is the publisher of Viking Update. Follow Viking Update on Twitter and discuss this topic on our message boards. To become a subscriber to the Viking Update web site or magazine, click here.