Although the Brumbies are expected to be boosted by the return of David Pocock for their Super Rugby semi final against the Highlanders, former Wallaby Owen Finegan thinks it will be the halfbacks that decide the match.

“Tomas Cubelli the Brumbies Argentinian import is the key to victory this Friday,” Finegan wrote on rugby.com.au.

“Cubelli has added an extra dimension to the Brumbies attack in the last couple of weeks setting up numerous tries and proving a handful.

“His impact was massive against the Force and just as noticeable was his second half absence. (He’ll) need to play for 80 minutes against the best halfback in the world Aaron Smith.”

While Cubelli has sparked the Brumbies attack in recent weeks, Finegan said his role in defense would be just as important.

“Smith is a real handful in attack, taking pressure off his five-eighth, sniping around the edge of the ruck with his running game and creating opportunities for his forward runners,” Finegan wrote.

“The Brumbies and Cubelli need to target Smith and put as much pressure on him as possible.”

The Brumbies face the Highlanders on Friday evening in Canberra at 6pm.