The Bears hired Martz as their offensive coordinator during the offseason, and no tight end under Martz has caught more than 38 passes in a season. Olsen led the Bears with 60 catches in 2009, but his blocking has been suspect.
So when the Bears brought in tight end Brandon Manumaleuna, who's known as a strong blocker, Olsen's future with the Bears seemed murky.
There were reports that Olsen was unhappy with his situation on the Bears.
"So far I have a great feeling about my role this year," Olsen tweeted Friday. "I have no desire to play anywhere but in Chicago.