NEW YORK — Donovan McNabb continued carving out a career as an outspoken TV commentator Friday, leveling some criticism in the direction of Tim Tebow.

NEW YORK — Donovan McNabb continued carving out a career as an outspoken TV commentator Friday, leveling some criticism in the direction of Tim Tebow.

McNabb was back on ESPN's "First Take" following a controversial Thursday appearance during which he criticized Washington Redskins head coach Mike Shanahan.

The six-time Pro Bowler switched gears Friday, saying Tim Tebow should get off Twitter and that he, not the new Jets backup signal caller, was the most unfairly criticized quarterback in the history of the NFL.

When the subject of a recent Twitter message from Tebow, in which he thanked Broncos fans for their support and promised Jets fans he would play his heart out for them, was brought up, McNabb said the popular quarterback needed to start studying football and take a break from social media.

"Let it go. At some point let's focus on getting into camp and learning a new offense," McNabb said. "There's no need to keep trying to have the fans behind you.

"Every time that we look up there's something. He's reaching out to fans, telling them 'I love you, I'm working hard.'

"As an NFL player, and as a veteran in this game, no one cares what you're doing during the offseason," McNabb continued. "They only care about what you do on the football field. This is why a lot of people in the Denver Broncos locker room had an issue `with Tebow."

McNabb got even testier when commentator Skip Bayless said Tebow was "the most unfairly, over-criticized quarterback" in league history.

"Negative — I am, I am," McNabb responded. "Nobody has been criticized as much as I have."

The 35-year-old free agent was clearly pointing to his 11 years in Philadelphia, where the fans and media grew frustrated with his efforts on the field after the 2005 Super Bowl loss to New England.

Jets

Speaking of Tim Tebow, if his ultimate goal is to once again be a starting quarterback in the NFL — particularly with the Jets — he's sure doing his best to hide it.

Tebow didn't directly answer that question in Monday's introductory media conference and skirted around it again Friday, making sure he didn't do anything to spark controversy. The Jets' prized offseason acquisition said he's uncertain if he'll ever be an NFL starting quarterback again, as he was this past season with the Broncos.

"You know what? I'm not sure," Tebow said during a 20-minute interview on 1050 ESPN's "The Michael Kay Show." "I don't know what the future holds, but I know who holds my future. And that's something that has always given me peace and comfort. That's why I don't have to worry about the future. I can just worry about today and worry about becoming better as a football player, as a person."

Saints

Saints coach Sean Payton filed an appeal of his one-year suspension Friday, joining general manager Mickey Loomis, assistant head coach Joe Vitt and the Saints' organization in seeking to overturn punishment handed down earlier this month by NFL commissioner Roger Goodell in the wake of a bounty scandal.

Payton had until Monday to appeal his one-year suspension, which is set to begin Sunday. He can work until the appeal is heard. Goodell has said any appeal would be expedited.

Loomis was suspended for eight games for not putting a stop to a bounty program that ran from 2009-2011. Vitt was suspended six games, and the Saints were fined $500,000 and docked draft picks.