Johan Mjallby knows that Motherwell's Champions League dreams mean Celtic will have to be at their best when they visit Fir Park.
With second-placed Rangers out of the running for a European spot due to being in administration, Stuart McCall's men could clinch a qualifying place in Europe's elite club competition just by remaining in third place.
Celtic's assistant manager is aware of the Steelmen's target as the season reaches its climax but is looking for the champions to bounce back from last week's shock William Hill Scottish Cup semi-final defeat against Hearts at Hampden, which scuppered hopes of a league and cup double.
"Motherwell should be very motivated," said Mjallby.
"They have been very strong this season, they are in a nice position and they have a lot to play for.
"So we know it's going to be a tough game, it usually is at Fir Park.
"I won't say they haven't been motivated in the other games we have played them.
"But we really need to be at our best and we want to get back to winning ways because it was disappointing to lose the cup semi-final.
"In most of the games that we haven't won this season, we have created enough chances to win them.
"That is probably the only criticism we have (of the players), there have been quite a few games where we have created chances but haven't taken them, we have been a bit wasteful in the department."
Celtic will have to do without the services of winger James Forrest whose ankle injury could yet keep him out for the rest of the season.
Right-back Adam Matthews and centre-back Kelvin Wilson, (both illness) and stopper Glenn Loovens (groin) will be assessed.
Motherwell will be without Jonathan Page and Keith Lasley through suspension.
However, Stevie Hammell and Steve Jennings both return from a ban for the Fir Park encounter on Sunday.
Stephen Craigan (Achilles) is expected to remain sidelined.
Motherwell squad: Randolph, Hateley, Saunders, Hutchinson, Clancy, Hammell, Carswell, Humphrey, Law, Jennings, Higdon, Ojamaa, Murphy, McHugh, Forbes, Daley, Cummins, Lawless, Hollis.
Celtic squad: Forster, Lustig, Matthews, Wanyama, K Wilson, Loovens, Mulgrew, Commons, Brown, McGeouch, Ki, Ledley, Samaras, Stokes, Hooper, Brozek, McCourt, Zaluska, Izaguirre, Rogne.