Wales fly-half Owen Williams will miss Ospreys' United Rugby Championship match against Glasgow Warriors on Saturday because of a hamstring injury.

Head coach Toby Booth says the injury is not serious, but will keep Williams sidelined for the next few weeks.

"He has a history with that [hamstring trouble] so we were proactive, and we can't afford to take any risks with the squad size we've got," said Booth.

"He'll miss out this week, but we'll reward the people that went well last week and it's important culturally not to make wholesale changes."

Jack Walsh, who shifted from full-back to fly-half after Williams' injury, is set to continue at number 10, while Wales Under-20s playmaker Dan Edwards will be involved for the first time competitively after featuring for the region in pre-season.

Ospreys will welcome back some of their Wales internationals who played against the Barbarians in Cardiff last weekend.

Meanwhile, new signings via a "game-changing" arrangement with South African side Cheetahs have also joined up with the region.

"The new recruits from Cheetahs have been here this week and we've almost doubled our numbers with the international boys coming back, so it's been nice to have some more bodies around and keen bodies," added Booth.

"You'll see some of the Wales players this week - not all of them, but some of them. We've taken it as a case-by-case basis.

"As everyone knows, because of the World Cup, we have a lot of games coming in 13 consecutive weeks, so it's about managing that."

Ospreys, who faced summer changes with budget cuts and departures, have won two of their opening three fixtures this season, including an impressive victory last weekend against Sharks in London.

They will aim to win a third consecutive game when they welcome Glasgow - who beat Stormers 20-9 last week - to Swansea.

"Motivation is good and our boys are pretty settled, coming in to work with a smile of their faces," said Booth.

"We try to have a bit of fun so morale is good and nothing beats winning to keep morale high."