Thiago was in tears on the bench against Chelsea after he had to withdraw from the starting XI due to an injury he picked up in the warm-up.
"We don't know exactly how long [he will be out]. For the weekend, not sure. Maybe Milan? But after that, definitely. He is fine again but he is not fit," said Klopp.
The Liverpool manager also spoke about the moment that he was told that Thiago was injured, as cited by Anfield Watch.
"It was a very emotional moment. I watched the warm-up and didn't see anything - then I came back into the dressing room and saw him on the bed saying he felt his hamstring. It wasn't a good moment."
📺 Jurgen Klopp on Thiago:
"We don't know exactly how long [he will be out]. For the weekend, not sure. Maybe Milan? But after that, definitely." 🔴 pic.twitter.com/Cl8sLdw2Ef
Anfield Watch Verdict
Losing Thiago that close to kick-off was a massive blow for Liverpool but luckily Jurgen Klopp and his team pulled through and brought the EFL Cup back to Merseyside.
By the sounds of what Klopp said, the injury doesn't seem too bad and he could be back as early as the West Ham game on Saturday.
Thankfully, the 30-year-old didn't try to play through the injury. Liverpool have kept the same mindset about injuries this whole season, if you aren't 100% then you don't play and they stuck to their guns once again.
The Spaniard is going to be a massive part of the squad if Liverpool want to win any more trophies this season, so keeping him fit could be key.