49ers make George Kittle highest-paid tight end in NFL history with 4-year contract extension

Kittle's four-year contract extension is worth $76.4 million with $35 million guaranteed and runs through the 2029 season.

The six-time Pro-Bowler's $19.1 million per year is the highest average annual value for a tight end in NFL history. Kittle's $35 million guaranteed at signing is the most in NFL history for a tight end. 

The two-time All-Pro was a big part of the offense for the 49ers last season, as he caught 78 passes for 1,106 yards and eight touchdowns in 15 games. Throughout his eight-year career, Kittle has been a great all-around tight end and emerged as a leader in the 49ers locker room. 

"In 2017, our first year with the 49ers, we selected a skinny tight end from Iowa whom we were really excited about. We had high hopes, but no one knew that he would become the player that he is today," 49ers general manager John Lynch said in a statement.

"George's leadership, enthusiasm for the game, for his teammates, and the faithful are truly unique and special. He is an outstanding representation for the 49ers on the field and is an outstanding representative for the organization off the field with his investment in the local and military communities. He has a great sense of pride in his role and has put in the work to be one of the best tight ends in the NFL."

The Associated Press contributed to this report.