Celtic need to replace another midfielder between now and the end of the summer transfer window, according to former Hoops striker Frank McAvennie.

The Lowdown: Mooy in, Johnston out?

The Scottish Premiership champions continued their productive summer on Tuesday, securing the services of Australia international Aaron Mooy.

The 31-year-old joins Celtic on a two-year deal and brings him with vast experience at a high level - he has 53 caps and eight goals for his country - as he looks to fill the void left by Tom Rogic.

Mooy's arrival certainly boosts the Hoops' squad depth but it could still be that more transfer business is conducted at Parkhead in the coming weeks, with McAvennie believing Mikey Johnston is next up for the chopping block.

The Latest: McAvennie wants holding midfielder

Speaking to Football Insider, McAvennie said he would like to see a holding midfielder arrive instead:

"I still think they need a holding midfield player. Get somebody in and get Mikey [Johnston] off the wage bill. [Ismaila] Soro has gone, [Tom] Rogic has gone, [Nir] Bitton has gone, so there’s places there.

"There’s nothing like having a big squad and having a good squad."

The Verdict: Is it needed?

The arrival of Mooy has made a big difference to Celtic's midfield options and the Australian is capable of playing in a deep-lying role, which could suit McAvennie's demands.

Whether or not another central midfielder is needed this summer is up for debate, but if Ange Postecoglou follows the former Hoops striker's advice and clears Johnston out, then a new face will indeed be required.

However, perhaps the top focus should be on signing a prolific striker who guarantees regular goals - Giorgos Giakoumakis topped the Bhoys' Premiership charts last term with just 13.