L’Equipe reports that Hogg tore his calf in training and could be sidelined for up to six weeks.
The 32-year-old signed with the French team a year after retiring from rugby, but his debut will be delayed.
The Top 14 season begins on September 7, with Montpellier hosting Lyon on the opening day.
Last month, Hogg was granted bail to travel to France after appearing in Jedburgh Sheriff Court for breaching a court order by sending "unpleasant" text messages to his estranged wife.
He pled guilty to repeatedly contacting his wife, Gillian, and his sentence was deferred pending the outcome of a domestic abuse trial later this month, which includes charges of stalking and controlling behavior over a seven-year period.
Hogg recently stated that he had "reset" at a rehabilitation clinic following his initial arrest.
“Complete k**b” – Joe Marler reveals the three rugby stars he can’t stand
England prop Joe Marler is never afraid of sharing an opinion or two - especially when it's about someone he doesn't particularly like.
In a series of tweets sent directly to Folau, Marler attached pictures and GIFs of men kissing, in a display of defiant humour which was praised by fellow players and LGBTQ fans alike.
On selecting Folau as his fullback, Marler commented, "On the night out, after we had played our match on the Saturday, I'd take him out in Brighton to The Blue Oyster... a couple of clubs."
#2. Marland Yarde
The winger dramatically left Harlequins in 2017 to join Premiership rivals Sale Sharks in an unusual mid-season move.
Marler said: “I hadn’t spoken to the bloke in 18 months,
“I’d lost the plot with him a good while ago. And let him be, let him do his own thing, because I’d given up on it
“He’d made the decision that he wanted to leave…you know, all the best to him. I wish him all the best. I don’t wish nastiness upon anyone.
“He’s one of those to just leave, as he won’t change in my mind. Me and him just don’t get on.”
#3.Sir Clive Woodward
Woodward tore apart Eddie Jones' side during a webinar, slamming Marler and fellow prop Dan Cole for their behaviour in a press conference prior to the loss against South Africa back in November. This wasn't the first time the 2003 World Cup-winning coach called out the prop.
After reading an article on the Rugby Pass website highlighting Woodward's comments, he tweeted him directly, saying: "Change the record Sir Clive - you should be grateful you can 'milk the cow' for another 3 years."
Change the record Sir Clive - you should be grateful you can “milk the cow” for another 3 years 💤 @CliveWoodward
RugbyPass
@RugbyPass
"It was like Laurel and Hardy. I know they [Cole and Marler] are on the bench but this is 48 hours from the World Cup final... it wasn't larking around - it was embarrassing"
- Clive Woodward pulled no punches in a recent webinar 🥊
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