Scarlets hooker Rees has failed to recover from a groin problem, Blues prop Gethin Jenkins has a calf injury and fellow Blues player, hooker Gareth Williams, has damaged knee ligaments.
“Matthew (Rees) is progressing well and will continue his rehab in camp with Wales,” said Davies.
“He will undergo exhaustive testing over the next few days which will give us a clearer idea of when he may be available, but we can confirm that the France game will come too soon for him.
“Gethin (Jenkins) has been scanned since leaving the field against Scotland and, as we thought, he has aggravated the calf injury which kept him out against England. At this stage we are not putting a time limit on his recovery, but again we know he will not take the field against France.
“Gareth (Williams) sustained medial ligament damage to his knee during the win over Scotland last weekend. He will undertake a rest and rehab programme and his progress will be re-assessed next week, but the injury rules him out of contention for Friday night.”
