McIntosh started all 16 games at left tackle for the Dolphins last season, but he was released on March 1 and thus became a free agent.
Although is play improved over his injury-plagued 2004 Dolphins debut season, McIntosh still didn't play well enough to justify his scheduled $3.3 million base salary for 2006, which is why he was released.
It's still likely the Dolphins want somebody else at left tackle this season, which is why they signed free agent L.J. Shelton last month.
But McIntosh will provide a nice insurance policy and both left and right tackle. It's also not inconceivable that McIntosh could challenge Vernon Carey for the starting right tackle job should the Dolphins not bring in anybody else.