Teenager Rehan Ahmed in frame to become England's youngest-ever Test debutant

Karachi, December 16: Teenager Rehan Ahmed is in line to become England's youngest men's Test debutant as the tourists prepare for their third and final red-ball clash with Pakistan.

The 18-year-old, who was added to the senior squad after impressing in an Abu Dhabi camp ahead of the team flying out, was passed over for the first two matches.

With Liam Livingstone having suffered a tour-ending injury in the opener, however, Ahmed is the only recognised wrist-spinner England have ahead of their last match in Karachi.

Having favoured the additional slow options of Joe Root and Will Jacks on flat pitches so far, captain Ben Stokes has revealed Ahmed could well figure as the tourists look to complete a clean sweep.

"We've been thinking about it," he said. "We can't go into too much detail until me and Baz [head coach Brendon McCullum] have had a look at the wicket.

"When we spoke about having Rehan into the squad, it was more than just bringing him in and integrating him into the squad. We did speak about us having no issues with selecting him if we felt it was the right option.

"I don't think this is a case of, if he was to play, of giving caps away. We picked him in the squad not just because of his talent, but because we thought it would be a good opportunity to play if we thought it was necessary."

Ahmed was not originally in the squad named for the tour, but a maiden cap would round out a breakthrough year that saw him impress in the Under-19 World Cup and earn a spot with Southern Brave in the Hundred.

"Having a wrist-spinner is always exciting, especially for England," Stokes added.

"But [we are] not getting too carried away with the potential that he has, because he is only young, and you've still got to nurture talent, even how exciting it is."

If Ahmed were to play, he would be 18 years and 126 days - surpassing legendary captain Brian Close who was 18 years and 149 days when making his debut in 1949.

The youngest ever England Test debutant was Holly Colvin, who was 15 years and 336 days when playing for England women against Australia in 2005.