Liverpool and New Balance announced that they agreed on a record-breaking deal. No contract expiration date was revealed in 2015.
However, the Mirror reporter Mo Chatra revealed that The Red’s shirt deal with New Balance is due to expire after the end of the upcoming campaign.
https://twitter.com/MoChatra/status/1023676654168760321
There is no info yet which brand will make Liverpool’s kits from the 2019-20 season.
According to Footy Headline, it is most likely that either Adidas or Nike will make the Red’s shirts.