Jones has missed much of the last two seasons to injury

"It's great to have Daf back, he's a top player whose work-rate and industry add so much," said Davies.

"With (Scotland lock) Scott Macleod also back it's a healthy situation."

Davies has picked the two internationals in his starting line-up for Saturday's must-win EDF Energy Cup match at Sale Sharks.

The Llanelli side are three points behind Sale in Group C and a bonus-point win would guarantee a semi-final spot. Sale need only a draw to top the group.

It's a massive opportunity for us to pit ourselves against the English champions and see where we are Phil Davies on the Sale game

A Scarlets win without a bonus-point could open the door for Newcastle to progress, if they get a bonus-point win from their home clash with Harlequins on Friday.

"Even with all their injuries Sale have a very strong squad," said Davies.

"They bring huge intensity and ferocity at the breakdown, but it's a massive opportunity for us to pit ourselves against the English champions and see where we are.

"There will be a lot of chances in the game - we just have to make sure we create and score more."

Llanarth-man Jones, 27, will be making his first appearance of the season after shoulder reconstruction in the summer.

The 29-cap back-rower has missed much of the past two seasons with groin, hand and ankle trouble before his shoulder problems.

In his absence a number of players have been tried in the Wales number six jersey, including Colin Charvis, Ryan Jones, Alun Wyn Jones and - most recently - Jonathan Thomas.