A BIG CALL

Hoops will only get better, says McGregor

- DAVID MCCARTHY

CALLUM MCGREGOR fired a chilling warning to the rest of Scottish football by insisting Ange Postecoglou's all-conquering Celtic is just going to keep getting better.

The Parkhead captain led his team to the Scottish Cup semi-finals with a superb 3-0 win at Tynecastle, clocking up their 27th undefeated match in a row.

And with a nine-point lead in the league and the Viaplay Cup in the cabinet, Celtic are potentially just 180 Hampden minutes away from the Treble.

That's not a subject McGregor will be drawn on but he does believe his side has not hit their optimum level.