Legendary Matfield hails Bulls star Nortje as Bok-in-waiting, but who will he dislodge?

He's lanky, he's got pace to burn, he's a superb organiser at the set-piece and he's poached opposition ball at will at times in the United Rugby Championship (URC) campaign.

It's little wonder legendary Bulls and Springbok lock Victor Matfield raves over Ruan Nortje, who's emerged as a star for his former franchise.

The 23-year-old second rower previously chuckled at his earlier attempts to add some bulk to his beanpole frame - his coaches told him at one stage that he's simply burning too much energy on the field - but at 2m and 113kg has now become a physical specimen that dominates.

In fact, Nortje draws widespread comparisons with Springbok incumbent Franco Mostert, a similarly tireless and unassuming player who simply couldn't be ignored eventually and has become an international stalwart.

READ | CJ Stander's stark warning to Duane's World Cup doubters: 'You can't write him off'

"I really believe that Ruan has been unbelievable this URC season," Matfield said at the launch of SA Rugby and Betway's partnership to empower coaches in the local women's game.

"He reminds one really a lot of Franco. Ruan's work rate is amazing. He completes a lot of tackles and manages the Bulls' line-out really well.

"If there's one guy who could realistically stake a claim for Bok selection [in the upcoming series against Wales]."

Matfield though has a tough time believing national coach Jacques Nienaber won't stick to his tried-and-tested, classy group of locks.

"Let's be honest, it's going to be very difficult to dislodge the existing guys. Eben Etzebeth and Lood de Jager are arguably two of the best locks in world rugby and then you have Franco in the bag as well.

"When RG Snyman returns and is fit, he's an automatic pick too. You have to