Yes clearly he would go if he had the chance, very amusing anecdote.
Doesn't change the facts that;
1) They most likely don't want him - Our papers love to link a player with a big club ala Steven Fletcher Real Madrid, David Marshall Arsenal etc etc
2) If the highly unlikely event of Man Utd wanting him was true he would rarely get a game and it would be negative for the national team
Putting aside the fact that he isn't good enough for Man Utd. He isn't even a nailed on starter for Scotland!