Former NFL quarterback Sage Rosenfels went on a Twitter rant on Thursday, referring to embattled Miami Dolphins general manager Jeff Ireland as “the worst [general manager] in my career” and a “jerk.”

Rosenfels, who played for the Dolphins from 2002 to 2005, criticized Ireland as the general manager continues to come under fire for his possible role in the Jonathan Martin bullying scandal. The 35-year-old claims that he was mistreated by Ireland while suffering from an illness, then given his outright release.

“I only spent two weeks on the Dolphins when Ireland was the GM. In that short time he won the award for worst GM in my career. #jerk,” Rosenfels tweeted. “My reasons for my disdain for Ireland are a long story. It took about an hour to find out what everyone in that locker room thought of him.”

During the rant, Rosenfels claimed that Ireland refused to remove him from the Dolphins’ non-football injury list, despite the fact that he had recovered from a bout with mono. “Two months after being put on Non Football Injury list with mono, I had gotten healthy and wanted to play.”

“He wouldn't let me off NFI because the Dolphins played the Raiders that week and he didn't want them to sign me as I knew the [Dolphins] offense,” he continued. “Makes sense except the Raiders were the only NFL team that had 4 QBs on their roster. He waited until late Friday to release me figuring nobody would sign me that late in the week.”

Rosenfels also weighed in on the allegations that Dolphins lineman Richie Incognito and other members of the team’s staff conspired to bully Martin, culminating in the second-year lineman’s decision to check himself into a hospital for mental evaluation. “I have no reason to help out either side. I hope it ends sooner than later. Just giving my two cents. The whole situation is a tragedy,” Rosenfels said.

The Twitter rant represents another blow to Ireland, who has come under increased scrutiny due to suspicions that Dolphins front office tacitly approved of Incognito’s bullying of Martin. A report by Pro Football Talk suggests that Ireland, when confronted by Martin’s agent about Incognito’s behavior, may have suggested that Martin “punch” his alleged bully to resolve the situation.