"He has had two years away from the game injured, but now he is back and I can guarantee the knee is 110 per cent and stronger than it was, so physically he's there.
"It's now just a matter of giving him the right challenge in front of him and slowly work him into a 90-minute scenario."
Martinez says Jones can slot into the Wales midfield alongside the likes of Jason Koumas and even hinted that he could eventually replace the Wigan star.
"He gives you a perfect blend in that midfield and can give you great partnerships," said the Spaniard.
"He has got many dimensions in his play but I think what we need to remember is Owain is still a very young man."
"It's important that he gets back to his fitness best and slowly reach his full potential.
"When he does that, he'll be one of the important players in the Welsh set-up."
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