It seems highly unlikely that we will be seeing anything more of the character Agent Coulson in any of the future Marvel movies since he died during The Avengers. However, actor Clark Gregg, who portrayed the character over a number of Marvel movies, has admitted that he would like to keep working with Marvel in the future.
Gregg explained to Movies.com, “I don't know that we'll see Agent Coulson again. You never know, there may be a flashback at some time. I've certainly pitched the prequel show with Budapest, Clint and Natasha and Coulson, but they seem really focused on looking ahead to the future.”
Clark also admitted that, while most of his writing and directing projects tend to be lower budget, Indie movies, he has spoken to Marvel execs about the possibility of working with them on future projects in a more behind the scenes role.
He added, “The stuff I write and direct tends to be a little small and indie, but I've definitely talked to Marvel lately about ways I can continue working with them, perhaps as a writer or a director.”
Clark Gregg appeared on the big screen as Agent Coulson in Iron Man, Iron Man 2, Thor and The Avengers but was killed off in the latter.