He went with the five percent last month and agreed to a two-year deal worth $14 million with $7 million guaranteed.
On Friday, Gonzalez raised the number saying that he is now 100 percent sure that 2013 will be his last season, reports ProFootballTalk.
The future Hall of Famer was a first-team All-Pro selection last year, catching 93 passes for 930 yards and eight touchdowns.
Gonzalez, 37, holds NFL records for most career receiving yards, most career receptions and career touchdown receptions for a tight end.
From Pro Football Talk:
Gonzalez still admitted that he’s “a little tempted” to try to break Jerry Rice’s all-time receiving record. With 1,242, the greatest tight end of all time is only 307 catches behind the greatest receiver of all time. And by rattling off so quickly that it would take four years to break Rice’s record, it’s clear that Gonzalez has done the basic math. He has caught 326 passes during his first four seasons with the Falcons, and at that rate it would take four more to beat Rice.