The Pogba brothers are set to face off for the first time in their professional careers when Manchester United host St Etienne on Thursday (20.05pm) in the Europa League round of 32 first leg.
Florentin may be the older of the two but he has struggled to make an impact on world football to the extent of his younger brother.
Paul became the world's most expensive player when United re-signed him from Juventus for £89million last summer.
Paul Pogba will face off against his brother Florentin on Thursday
Florentin Pogba wants to 'kill' Paul according to St Etienne boss Christophe Galtier
The two have mischievously taunted each other ahead of the match later this week and now St Etienne boss Galtier has waded in with his own warning to Paul.
“We speak about this game and I know for the family it’s an important game,” Galtier told the Telegraph.
“It’s an African family [the sons are French-born from Guinean parents], you know.
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Christophe Galtier jokingly asked Paul to show his brother respect against St Etienne
“And one thing is important. Paul is the youngest. He has to give the respect to his older brother!
"But man-to-man it’s not a problem for Flo to play against his brother. He wants to kill him!
"I think it will only be difficult for their mother!”