Liverpool boss Jurgen Klopp gave an update on the fitness of two of first team stars after the narrow win at Bournemouth.
The Reds won the game 2-1 despite fielding an experimental XI, handing Danny Ward a debut in goal.
He said: "[Origi] got a knock on his back, I think. I asked him after the game and he said it was a little knock in the back and hopefully it's not serious.
"[Toure's injury is] a little bit more [serious], it's the muscle. I'm not sure if it's cramp or more but in the last few months Kolo had absolutely no issue with his muscles so hopefully it's not a big thing."
Origi's status, irrespective of how serious the injury is, will be of greater interest to fans as he has been excellent in recent weeks, picked in key matches against Borussia Dortmund, and scoring in the thrilling second leg win on Thursday night at Anfield.
With a top four place out of the question in the Premier League, Liverpool can afford to rest the Belgian striker and get him fit, but the fact the Merseyside Derby is next weekend will give Jurgen Klopp an interesting dilemma of whether to rush him back or not.
The first leg of the Europa League semi-final takes place on April 28 and the second leg on May 5, giving Origi a window of time to recover, but not a lot, and he will be closely monitored by the club's medical staff.