Gauld is being tracked by both European giants.
"I need to sit down and think what’s best for me in the future," said Gauld, who played his part in United’s 4-1 Premiership victory over Hearts on Saturday.
"Growing up, I watched the Spanish Leagues and prefer that style. In England, it’s maybe a bit more direct.
"I think being abroad is the best culture of football for me.
"If I was to go down there (to England), I’d have to think what my chances are of first-team football, if I was stuck out in the reserves how much I would enjoy that?
"I can’t just think: 'It’s a big club, so I’ll jump at the chance to sign for them'."
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