Vikings coach Mike Zimmer said there are some "flags" that popped up during the team's second meeting with Texas A&M quarterback Johnny Manziel on Friday.

The Vikings held a private workout and dinner with Manziel the day after his pro day. The two sides previously met at the NFL combine in February.

"We asked him all kinds of questions. … There are some flags that come up," Zimmer said on 104.9-FM The Horn in Austin on Monday (per Coaching Search). "All of the things that happened out in Los Angeles, the commercials and all that stuff (Manziel had a cameo in a recent McDonalds commercial with LeBron James); the position of quarterback in the NFL is such an important position and the reason these guys need to be a totally football-minded guy is the pressure of the position and being the face of an NFL team and doing everything right. That's the thing you want to know about him — will he be into work early every single day? Will be the last to leave? Will he be the guy that is working the hardest to get better?''