Sir Alex Ferguson has confirmed Brazilian teenager Rafael Da Silva is now an integral part of his first-team squad.
The 18-year-old has been handed starts against Aalborg and West Brom in recent weeks and Ferguson now accepts he has another selection dilemma on his hands at right-back with club captain Gary Neville and Wes Brown also vying for the position.
"In football, when a guy turns the corner you cannot do anything about it," he said. "Rafael is a great talent and his performances are telling me I have another problem at right-back."
At Champions League level, Aalborg did not offer much of a threat, leaving Rafael to attack down the right flank at will.
Saturday's clash with West Brom was somewhat different. While the result was eventually quite one-sided, the Baggies gave a decent account of themselves during the first half.
The pace and power of West Brom winger Chris Brunt provided Rafael with a tough examination of his talent, which is just what Ferguson wanted to see; a reminder of the task a similarly-aged Brown faced against Jimmy Floyd Hasselbaink when he encountered Leeds a decade ago.
"Wes himself came in at 18, played against Hasselbaink in his first game against Leeds and he was superb," said Ferguson.
"It is a learning process playing against that power and experience. Premier League football is not easy.
"I didn't realise how big Brunt was and what a nice left foot he had, so that presented a challenge for Rafael.
"For periods in the game he was finding his way and it was only when I was going to take him off that he started to play the way we know he can."
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