Rugby league has turned their round nine into a blockbuster Brisbane blitz, with all eight games set to be played at Suncorp over the one Mother's Day weekend.

But the games will start on May 9 – just as the A-League plays its two big semi final deciders on May 10-12, which means Roar will need to find another venue if they get that far.

And if they still manage to make it into the Grand Final, it's unlikely Suncorp will be fit to host it after eight NRL games are played back to back on the surface the weekend before.

Today the FFA said they had been made aware of the NRL looking at the stadium close out before the draw was announced today.

But they didn't reveal if they had asked the NRL to delay the so-called "Magic Round" for a fortnight to allow the A-League Finals to finish first.

They are now trying to find a second choice stadium for any potential Queensland semi final if required.

Robina Stadium on the Gold Coast is the most likely back up choice, especially if all the NRL clubs are using the Brisbane venue which will ensure the 27,000-seat CBus Stadium - and former home of Gold Coast United - should be vacant.

An FFA spokesman added: "We were aware of the potential of these fixtures happening prior to the draw.

"Although disappointed, we are looking at other options."