(Photo by Stu Forster/Getty Images)The Liverpool starting XI for tonight’s Carabao Cup third round tie against Southampton is likely to bear little (if any) resemblance to that from the Merseyside derby last weekend. It might duly be the perfect setting for two of LFC’s summer signings to make their official debut for the Merseyside giants tonight, with Giorgi Mamardashvili and Giovanni Leoni yet to feature competitively since their respective arrivals at Anfield. Mamardashvili ‘so happy’ as Liverpool debut awaitsThe Georgian goalkeeper, whose transfer from Valencia was agreed 13 months ago before being activated at the start of July, is set to finally get his Liverpool bow tonight, and he’s been unable to hide his glee in the lead-up to the Southampton game. I worked hard and I’m so [excited] to make my debut, my first official game. I work hard every day.”Mamardashvili has previously shown that he can excel on the big stageThe ongoing brilliance of Alisson Becker has kept Mamardashvili waiting for his official Liverpool debut, having had a sample of game-time during pre-season.