Last season's joint Newcastle premiership winner, Roots jnr is relocating to a multimillion dollar training facility at Central Mangrove on the Central Coast.

Prominent owner Paul Borg, Roots jnr's main supporter over the past 15 years, has bought the property, which will feature a track, water-walker and stables.

Roots jnr's base at Keinbah, which was previously the home of multiple premiership winner Shane Tritton, is being sold and he will make the move in the next five weeks.

He said the new property was "awesome" and he was excited about the move closer to Menangle Park.

In the meantime, he was expecting Private Sector to push hard for back-to-back wins at Newcastle.

Private Sector won by two metres in 1:56:9 last Friday night and will contest the Menangle country series heat on Wednesday night's program with top reinsman Todd McCarthy in the gig.

"He should be hard to beat and I think he will really go for Todd as well," Roots jnr said. "He'll lead and if he doesn't lead, he'll do what he did the other night and park out and just keep the pressure on the whole way. He should be just about too strong for them, I'd say."

He said Private Sector was his best chance but That Said in race six was another he expected to challenge.

The six-year-old is yet to win in nine starts for Roots jnr and has missed a place in his past five but the trainer was confident he was capable of an upset.

"I think he might run a cheeky race," he said. "His form doesn't look great but he's probably racing better than it suggests. We've driven him a bit hard his last couple, so we might drive him less aggressive.

"He's going to win very soon that horse, but he's hard to pick.

"The Big Dig [in race eight] should go well again. He might have to sit outside the leader again but it's a winnable race. He sat in the death seat the other night and boxed on well for third."

"[Driver] Tom [Ison] said afterwards he should have put more pressure on the middle stages, but the horse is racing really good, so he's a top three chance."