The defender is tipped for big things after impressing on England U21 debut.
"There have been lots of Championship clubs interested in taking him on loan," Appleton told the WBA website. "It was only last season that Swansea were playing in the Championship.
"They've stepped up into the Premier League and they've asked questions of their players in terms of whether they can cope with the Premier League.
"They've done well so far so if Craig does get the nod I don't think he'll have any problems with it and I'm sure he'll deal with it in the right way."