"Until I've spoken to Gary about it I don't know how much is based on fact," Southgate told the Evening Gazette
"I think certainly there has been a little problem with him settling off the field, but whether that problem is still there or it's something that we can deal with we'll have to see over the next couple of months.
"He certainly won't walk out the door without a fight from our end. I think he's done a fantastic job on the right-hand side this year.
"I think there's more to come from him and obviously the first thing he's got to do is get over the injury."