To quote Billy Ocean, 'When the going gets tough, the tough get going'.

And it's along those sorts of lines that former Celtic defender Alan Stubbs is viewing the title race between Brendan Rodgers' side and Rangers.

The pundit reckons Celtic are acting like champions, while Rangers are beginning to show signs that they can't handle the pressure of the situation.

With just four games of the Premiership season to go, Celtic lead the way at the top of the table by three points. They're just two wins away from potentially securing the league trophy.

Stubbs can't see past his old club in the title race. And speaking to talkSPORT this morning, he also couldn't get away from a 'strange' comment made by Philippe Clement in recent times regarding Rangers' drop in form.

"I think Celtic have responded like champions," he said. "I think Rangers have wilted under the pressure a bit, I must admit. Celtic have been quietly letting a lot of people do the talking about them, where Brendan has been there and done it.

"I think Celtic are in a really strong position right now. Their [Clement] manager has come out with a few strange comments which I didn't get after the Old Firm game and the Dundee game after that. But I just feel like Celtic are in the prime position right now to do a Double - which people will probably look at as a mediocre season."

READ MORE: The 'transfer fee' Celtic will need to fork out for Adam Idah - and it's not £3m

Meanwhile, the fee Celtic will need to pay to Norwich City for the sale of Adam Idah has been revealed, according to a report. 

The Scottish Sun claims the Championship club has slapped a £5m price tag on the Republic of Ireland international's head.

The 23-year-old has made an impressive impact since joining the champions on loan from Norwich in January.