Fraser Forster makes his first start of his second spell at Celtic after joining on loan from Southampton as he replaces Craig Gordon. Also dropping out of the line-up after Thursday's Europa League win are Jozo Simunovic, Odsonne Edouard and Mikey Johnston. Vakoun Bayo makes his first start for the club up front, while Nir Bitton comes into defence and Olivier Ntcham steps into central midfield.

Hearts haven't played since last Friday when they beat Motherwell in the League Cup and Craig Levein makes one enforced change to his line-up from that game. Former Stoke and Aston Villa midfielder Glenn Whelan makes his debut, with Jamies Walker out with a broken leg.

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Billy Dodds
Former Scotland striker on Sportsound

James McFadden
Former Scotland forward on BBC Radio Scotland

Celtic: F Forster, K Ajer, C Jullien, N Bitton, B Bolingoli, S Brown, C McGregor, R Christie, O Ntcham, J Forrest, V Bayo

Substitutes: C Gordon, A Ralston, J Hayes, M Shved, M Johnston, L Griffiths, O Edouard

Hearts: J Pereira, M Smith, C Berra, C Halkett, A Hickey, J Mulraney, S Clare, C Washington, G Whelan, B Irving

Substitutes: C Doyle, A White, O Bozanic, U Ikpeazu, J Brandon, C Dikamona, E Henderson

Borna Barisic's majestic free-kick proves the difference as Rangers grind out a vital win over stuffy St Mirren.

The hosts will feel aggrieved at not being given a first-half penalty for Filip Helander's challenge on Jonathan Obika.

Rangers dominated long spells and had chances to make the game safe, but survived a late scare when Saints debut striker Junior Morias failed to convert when picked out unmarked on the six-yard line.

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Into six minutes of added time and St Mirren's Junior Morias tries to redeem himself as lets fly from the edge of the box but is way off target. Not the debut the big striker was dreaming of.

Relief for Rangers as Junior Morias fluffs a golden opportunity six yards out. Great work from Kyle McAllister as he drives at Borna Barisic and squares the ball for the unmarked debut striker who can't control and the chance is lost.

Rare moment of danger from St Mirren as they win a corner and Paul McGinn meets it with a header that flies a couple of feet too high.

Last throw of the dice by St Mirren boss Jim Goodwin as striker Danny Mullen replaces Tony Andreu. Rangers also make their final change, with Andy King given a first league outing in place of Scott Arfield.

Fewer than 10 minutes to go and Rangers cruising towards the finish line. St Mirren have offered nothing in response to going behind in the searing heat.

From the sublime to the ridiculous ... Borna Barisic finds himself in a decent position inside the box, only to take a fresh-air swipe at the ball as Rangers probe for a killer second goal.

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Jermain Defoe almost doubles the lead, firing an angled drive narrowly past the post, before his shift for the day is ended as Alfredo Morelos is sent on.

Play halted as goal hero Borna Borisic receives treatment for a bloody lip. Rangers well on top now and St Mirren toiling to lay a glove on the visitors.

James McFadden
Former Scotland forward on BBC Radio Scotland

Rangers make their first change, with Steven Davis on in place of Jordan Jones, who has struggled to trouble St Mirren.

St Mirren hand new signing Junior Morias a debut off the bench in place of fellow striker Jon Obika. Boss Jim Goodwin has to rip up the containment game-plan and throw caution to the wind now.

Billy Dodds
Former Scotland striker on Sportsound