Keown explained in his column for the Daily Mail: "Itâ€™s a friendly so this is the type of game to experiment, but it would still be a rather big call by the England manager.
"Because Jones has a lot of energy, people say that he would be a good fit for midfield. Heâ€™s played there for Blackburn and Manchester United, but whether heâ€™ll be sharp enough for Spain is another matter. If he can do it against them he can do it against anyone, but it would be asking a lot of him.
"Although itâ€™s clear we have an outstanding talent on our hands, he could be exposed in this position. When youâ€™re playing for England you want to play in a familiar position and his best place will eventually be central defence.
"Jones still hasnâ€™t cracked everything defensively, mind you. Heâ€™s got things to learn. He has to pick and choose when he goes forward â€” to meet the needs of his team before he meets his own. Heâ€™s well equipped to go to the very highest level, but he needs to strike the right balance in his game."