Glazer, speaking Tuesday to the Tampa Bay Times at the NFL's owners meetings in Phoenix, said he still has confidence despite coming off a 2-14 season that coach Lovie Smith and general manager Jason Licht will make the right selection come April 30 in Chicago.
"With anybody we're looking to draft, we do an extensive amount of work on their background, history and all that," Glazer told the newspaper. "We spent time with Jameis and Marcus and went into everything into their background. After everything we've done and where we're at right now, we're comfortable where Jameis is at, we're comfortable with Marcus or whoever else it could be."
Glazer said he views the past season as water under the bridge.
"We look at everything as live and learn," Glazer said. "So if there was an experience that happened and certain things didn't work out, to us it's more important to look into why it didn't work out and make sure we don't repeat the errors of the past.
"That's an area where I've spent a lot of time with Lovie and Jason. And there is no doubt, they're two people who would, A, admit a mistake if there was a mistake and move on rather than dig a deeper hole. And B, work to find out why this thing happened and correct it going forward."