Jonathan Martin is done with football after three seasons. (USATSI)
Jonathan Martin is done with football after three seasons. (USATSI)

Former NFL offensive lineman Jonathan Martin officially retired at the end of July, but at the time, he didn't explain why he made the decision. 

That changed on Monday, when Martin finally explained the reason for his retirement in a series of tweets, including one that he deleted just after sending it out. 

In the deleted one, which was screengrabbed by Blackandbluereview.com, Martin explains that he's retiring because "being in a wheelchair at 50 isn't worth any amount of money."

This could actually be a personal thing and not necessarily a shot at the NFL because Martin had been dealing with a back injury. Martin suffered a injury that needed surgery and if he undergone the surgery, there's a chance he would've had to sit out the entire 2015 season. 

"It just never got better," Martin’s agent, Kenny Zuckerman, told NationalFootballPost.com. "He was just hoping it would just get better and better every day, and it just didn't."

As for Martin's other retirement tweets, he sent one out saying he's going to miss football.

And then he sent another one out thanking his former teammates. 

Conspicuously absent from that list is Martin's former Dolphins teammates. 

The 2012 second-round pick only lasted a season and a half in Miami after a bullying scandal erupted in 2013. Martin alleged that he had been bullied by several teammates that year and the NFL hired Ted Well to look into the situation. 

After a four month investigation, Wells released a report in February 2014. The report concluded that Richie IncognitoJohn Jerry and Mike Pouncey all "engaged in a pattern of harassment directed" at Martin.