Iginla was a healthy scratch ahead of the Flames' home game against the Colorado Avalanche on Wednesday.
The 35-year-old is in the final year of his contract after spending 16 seasons in a Flames uniform.
Calgary is 14th in the Western Conference and facing a fourth straight season of playoff-free hockey.
Iginla, who led the Flames to an eventual defeat in the 2003-04 Stanley Cup final, had previously said he wanted to stay in Calgary.
But the team's all-time scoring leader reportedly provided general manager Jay Feaster with a list of teams he would consent to join.