Matip is poised to hand Liverpool a timely fitness boost as Klopp hopes to navigate his squad through a central defence injury crisis, with both Fabinho and Virgil van Dijk out of contention.Keita is also set to be part of the travelling group to Bergamo for Liverpool's third match in Champions League Group D, but fellow midfielder Thiago Alcantara is yet to return to training.
"I have really no idea what I do with this information in the moment because yes, they trained, that's good, it's better than if they don't train. But we have to see what we do with it. Atalanta, renowned for their high-octane pressing style under coach Gian Piero Gasperini, defied expectations last season to reach the Champions League quarter-finals.