Daniel Arzani is not the only Aussie on the way back to full fitness at Celtic Park, and even as he faces a battle to get into the starting line-up his countryman – who last season may have expected to come straight back in with his place waiting for him – is in a similar battle, and that’s something he might not be used to in the Celtic side.

Tom Rogic has been a Celtic stalwart for the last few seasons.

Even in an injury plagued campaign last season he made 39 appearances and scored 6 goals.

The season before that he featured in 50 games and scored 8.

He once had a claim to be a guaranteed first pick.

Not anymore, because there’s a new player in his position, and the battle between the two of them is going to be interesting to say the least, and Celtic might well be the prime beneficiaries of that. It is always good when two quality players are duking it out for a place in the team.

Ryan Christie is a born again footballer at the club.

Signed in the summer window of 2015, whilst Ronny Deila was at the club, he didn’t even arrive before being sent back on loan for the season with Inverness.

But an injury in November that year brought him back to Celtic to work with the physios and he actually made his debut on 23 January 2016.

What followed was a largely frustrating spell at the club, making only a handful of appearances in Rodgers first campaign before he was sent out on loan again, to Aberdeen.

There, he proved what a player he was with goals and assists helping them to the Scottish Cup Final of 2017, but he was unable to play in the match because it was against Celtic.

He returned to Aberdeen for the whole of the 2017-18 campaign.

Fans would have been entitled to wonder if he would ever again pull on a Celtic shirt.

But he came back to the club for the start of the following season, and once again seemed to fade into obscurity.

And then Celtic played Hearts at Murrayfield in the League Cup semi-final.

It was 0-0 at half time, and Rodgers was forced into a change because Olivier Ntcham pulled his hamstring.

Christie came on as a substitute and changed the game, scoring one and playing a role in both the other goals as Celtic ran out 3-0 winners.

He has never looked back.

He played 40 games in all last season and scored 11 times.

This season, he’s already got 8 in all competitions … a hugely impressive return.

Both he and Rogic are similar footballers, but they can play in the same side.

Yet in Lennon’s preferred system there seems to be room for only one, in the “hole” behind the striker, where either player is deadly effective.

With both now fit, Lennon has a big decision to make.

Scottish football waits with baited breath for what he comes up with … either way, Celtic’s rivals might not like the answer very much.