"I'm not worried about the young players filling in at the back," he said.
"Evans has ample experience, of course, and has been at the club since he was 12. He's played plenty of first-team games.
"Jones has the experience of playing for Blackburn last season in the Barclays Premier League.
"I thought he and Smalling were the stars for the England Under 21s in the summer, and Chris had a fantastic first season with us, and he's continued his progress this year.
"So I have absolutely no issues whatsoever with playing those guys."