San Francisco 49ers tight end George Kittle and retired tight end Greg Olsen are kicking off Tight End University this week in Nashville, Tennessee. It's a gathering of some of the best tight ends in the league for a week of training, information sharing, and all-around improvement.

No, Tim Tebow will not be there. The former quarterback who converted to tight end and is working to be a part of the Jacksonville Jaguars roster was not invited.

Kittle and Olsen joined the Pardon My Take podcast, and the 49ers tight end explained why Tebow was excluded from the week-long event.

"So, nothing against Tim Tebow, but I found it hard to invite -- I wish nothing but the best for Tim Tebow, and I hope he has a fantastic season playing tight end -- but it's hard for me not to invite a backup tight end on, let's say the New York Giants, as opposed to inviting a guy who just started playing the tight end position because we do have limited spots," Kittle shared. "I wish I could make it so every NFL tight end can come, (so) it's accessible to everybody. But what we tried to do this year, we wanted to pay for everything for all the tight ends that come to kind of make it a special event for all tight ends."