Ennis joined the Senators' training camp on a professional tryout agreement. He previously played with Ottawa during the 2019-20 season recording 14 goals and 19 assists in 61 games before the Edmonton native was traded to his hometown Oilers in a deadline deal.
“Tyler has had a strong training camp,” Senators general manager Pierre Dorion said in a statement. “He’s a highly-skilled veteran whose leadership qualities should prove as valuable as they were here two seasons ago. He’s capable of generating offence both at five-on-five and on the power-play, and, with an ability to play both wing positions, he’ll be a good addition for us at forward.”
The 32-year-old Ennis had three goals and six assists in 30 regular season games with the Oilers last season. He also appeared in two playoff games.
Ennis was drafted 26th overall by Buffalo in 2008 and has 136 goals and 186 assists in 643 games over 12 seasons with the Sabres, Minnesota Wild, Toronto Maple Leafs, Senators and Oilers.