Ruddock won the Grand Slam with Wales in 2005 before leaving a year later.
Ruddock says he will also be talking to prop Darren Morris about his future.
But if the game does go ahead, Ruddock said he will be fielding a strong side.
Labour have criticised the decision to give a knighthood to a Conservative party donor, Paul Ruddock.
Worcester director of rugby Mike Ruddock gave Jones his only Welsh cap in 2005.
Worcester's decision to turn to Ruddock was first revealed by BBC Sport on Monday.
Ruddock led the Warriors to the European Challenge Cup final in his first season in charge.
"It's going to be tough, " Warriors director of rugby Mike Ruddock told BBC Hereford and Worcester.
Director of rugby Mike Ruddock said that losing the 26-year-old international is a major setback.
Eddie Jones, Nick Mallett and Mike Ruddock have ruled themselves out of contention for the job.
Fans' favourite former Wales coach Mike Ruddock said that he is staying with Worcester.
And Ruddock knows they must secure their top-flight status before he puts his plans into overdrive.
Ruddock has revealed that he is already targeting players to bring to Sixways in the summer.
But Ruddock says he is happy to give him time to come back to full fitness.
But Ruddock says the new treatment has had a big effect on the ex-Gloucester man.
Ruddock fully expects Collins to be challenging for a more regular first-team place next season.
Warriors have been linked with Welsh stars Ceri Sweeney and Mike Phillips but Ruddock would not be drawn.
Director of rugby Mike Ruddock told BBC Hereford and Worcester there has been considerable progress in recent weeks.
We will say nothing of Mike Ruddock ''poaching'' eight of the Dragons side that faced Leinster on Sunday.
BBC: SPORT | Rugby Union | Six Nations | O'Sullivan keeps his powder dry
The dad who sent me Ms Ruddock's email felt nauseated by the trade.
Ruddock has been denied the services of several players through injury or illness.
"Chris Fortey took a knock on the shoulder and it's muscular damage from the collision he took, " added Ruddock.
Davies, among the best fly-halves ever to play international rugby, says he can see the logic behind Ruddock's thinking.
BBC: SPORT | Rugby Union | Six Nations | Davies backs Wales over Wilkinson
Hill says he has spoken to a lot of people at the club since his appointment to succeed Mike Ruddock.
Ruddock was more flexible over the position of Michael Owen, another player whose role has been the source of debate.
Wales coach Mike Ruddock will also keep a keen eye on the Dragons' home game with Leinster on 18 February.
BBC: Jones will be available for the Scarlets' game in Connacht
Ruddock was also happy with the progress of full-back Chris Pennell, another player who has suffered with injuries this season.
Philip Ruddock, the immigration minister, has taken a backward step by introducing a kind of second-class citizenship for some refugees.
Ruddock, who has been assisting his local club Mumbles in a coaching capacity, said he had big plans for the club.
"Thankfully the medication that was prescribed by the last specialist he saw seems to have speeded things up somewhat, " said Ruddock.
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