Celtic went into the break 4-0 ahead of Greenock Morton. Aaron Mooy, Kyogo (twice) and David Turnbull set the Scottish Champions on their way to securing a place in the draw for the Fifth Round.
Aaron Mooy opened the scoring from the spot after a questionable penalty.
Minutes later, Celtic doubled their lead through Kyogo after the Japanese striker capitalised on a mistake by Celtic cult hero Efe Ambrose.
David Turnbull made it 3-0 with a composed finish. The Scotland Internationalist has been given a start with a view to impressing the manager and this goal will do him no harm.
Kyogo doubled his tally with a lovely turn and finish. The contest was overly a while ago but it now looks as if Ange’s side are going to try and inflict as much suffering upon their Championship visitors as possible.