Liverpool's squad are pushing themselves to their physical limits as their Premier League title bid reaches its conclusion.
Captain Jordan Henderson required a half-time pain-killing injection to make it through the 90 minutes of their famous 4-0 Champions League win over Barcelona, and while left-back Andy Robertson was forced off at the interval he too has already returned to training.
"The famous three words of this week in the dressing room is 'It's only pain'. Very important for all the young lads to learn," said manager Jurgen Klopp ahead of what could be a historic weekend if results go their way.
"Hendo said 'It's only pain', Robbo said 'It's only pain' but it was real pain. Wow! Robbo could deal with the pain but he could not activate the muscle.
"They should be fine."
Premier League top scorer Mohamed Salah is also set to return for Sunday's match at home to Wolves after recovering from concussion sustained at Newcastle last weekend, although fellow forward Roberto Firmino is targeting the Champions League final on June 1 for his return from a groin problem.
Klopp added: "Mo looked good around the celebrations, and yesterday and the day before he was running outside. Today he will join in training. Bobby? Not for the weekend. But we have enough time (for the final)."
