Wright wrote in The Sun: "Iâ€™m hearing very few people questioning whether Swansea or Cardiff should be allowed to compete at the very top in England.
"If Wales are able to have two clubs in the Premier League, so should Scotland. While I accept Cardiff and Swansea have a history of playing in England, the principles are surely the same.
"Yes, there is a Scottish League but there is also a Welsh League which offers European football but neither Cardiff, Swansea, Wrexham or Newport are involved.
"But I had a short spell at Parkhead between 1999 and 2000 and I am firmly in the camp that they HAVE to come into English football."