"It was a pretty crazy season and probably the most dramatic season that I've been a part of in my 15 years of playing the game."
Police stopped Carter in Paris in February near the Champs-Elysees. He registered an alcohol limit of .98g/l, well above the authorised limit of .5g/l. Police said he was also speeding and not carrying his driver's licence.
Carter apologised on social media but has not spoken about it since.
"No excuses - I made a massive error of judgment and have let down my club, my fans and most importantly my family," he posted at the time on Facebook.
Sponsor Land Rover dropped Carter as a brand ambassador after his arrest.