The Australian has been a free agent since leaving Melbourne Victory in his homeland last season.
Reports suggest the 33-year-old is keen on a return to England for family reasons having also spent three years with Turkish side Galatasaray.
However, Wray insists Town are not making moves to sign Kewell.
He told the Advertiser: "There is nothing at all in it, no association at all. I have seen the rumours but there is nothing in them, the first I saw about it was in the media."