Saints pair Lawes and Ma’afu return to face Saracens
The duo missed the defeat at Exeter on April 12, with both rested after a brutal Champions Cup loss at Clermont Auvergne eight days earlier.
Lawes had been nursing a shoulder injury, but has been in training this week ahead of the crucial Aviva Premiership encounter.
“Courtney’s good,” said assistant coach Alan Dickens. “He’s trained all week so he’s ready and available.
“George North and Ben Foden aren’t available but everyone else is fit and raring to go.”