The Dolphins will be in the market to acquire a quarterback, Ireland said Tuesday, but he still likes Henne's potential.
Henne started 14 games last season for a Miami team that finished next to last in the AFC in scoring. He was benched twice, threw 19 interceptions and lost the support of leading receiver Brandon Marshall.
Dolphins owner Stephen Ross has pledged the offense will be more aggressive, creative and exciting in 2011. Ireland said such improvement can be achieved with Henne -- although alternatives will be considered.
"He has shown some aggressive tendencies," Ireland said. "He has shown some exciting throws. The quarterback position is obviously a very important position. We'll evaluate what's out there, like we do every position, in free agency and the draft."
Ireland didn't rule out re-signing quarterbacks Chad Pennington or Tyler Thigpen, who will be free agents this offseason. Pennington, who led Miami to the playoffs in 2008, faces arduous rehabilitation following a fourth operation on his throwing shoulder.
"He has to get healthy, and that's going to be awhile," Ireland said. "So we're not rushing into any decision."
Improving team speed will be a focus, including in the skill areas on offense, Ireland said. But he said there's a chance Miami will bring back Ronnie Brown or Ricky Williams, both free-agent running backs.
"It's obviously a vote of confidence from the owner, and that's ultimately the guy you've got to make happy," Ireland said. "We've got some unfinished business here. We really look forward to getting this thing turned in the right direction."
The Dolphins in the last week hired Brian Daboll to be offensive coordinator, brought in Jeff Nixon as running backs coach and Darren Krein as strength and conditioning coach, and promoted Dan Campbell to be tight ends coach.
The Associated Press contributed to this report.