Lee undergoes surgery
Lee (23) underwent surgery to his left shoulder ruling him out for the start of new the season.
Scarlets will welcome back DTH van der Merwe, Emyr Phillips and Gareth Owen for the start of the season.
Owen (27) is one of the Scarlets players who have signed contract extensions ahead of 2016-17 season. The versatile backline player has represented Wales Sevens and Wales Under-19 and U20. Owen featured in 22 of Scarlets's competitive games in 2015-16, named in the starting line-up for 18 of those either at wing or centre.
Phillips is also one of the 12-strong group to have extended their contracts keeping them at the club.
Matthew Rees, Scarlets Head Physiotherapist said: "Samson has undergone shoulder surgery and is expected to be unavailable for 12-16 weeks. We're pleased to see DTH, Emyr and Gareth making good progress and on track to be back in action for the start of the season."