With the Titans, Grasu has mainly worked at center, but he's played some guard as well. He'll provide depth behind starting center Ben Jones.

Drafted in the third round by the Bears, Grasu has played in 17 games, with 13 starts. He missed the 2016 season with a torn ACL after spending that offseason working under the tutelage of Hall of Famer Kevin Mawae, a Bears assistant the time. As a rookie for the Bears, Grasu started eight games at center. Following the 2016 season, he started four games at center in 2017.

Grasu was waived by the Bears at the end of the 2018 training camp and signed with the Ravens, where he played in three games. Grasu also spent the month of December with the Miami Dolphins, before being waived.