The Grecians lacked a consistent scorer last season, despite securing automatic promotion from League Two, as Adam Stansfield led the way with 10 goals.
With that in mind, Tisdale admits bolstering his attacking options will be a priority over the coming weeks.
"I think we will be looking to bring a striker in at some point, but we do have a number of good strikers at the club, so we won't panic about bringing one in," he told skysports.com. "We will be hoping to strengthen a number of areas this summer and that is one of them."
Charlton striker Fleetwood scored three goals in eight appearances to help Exeter clinch promotion, but Tisdale doubts the 23-year-old will return to St James Park this summer.
"He is a Charlton player and he has gone back to them, so unless he becomes available it isn't an issue," he added. "But he did extremely well for us when he was here last season and he is a player we would be interested in if they didn't want him."