More pertinently, the Australian side has since been turned upside down by a ball-tampering scandal in South Africa - with Steven Smith and David Warner since cast aside after bans from Cricket Australia.
"He just wants to atone for his mistakes and move on - I hope Australia gives all of them that chance".
"To score three on the bounce is really pleasing considering 12 months ago people were questioning whether I should be playing or be opening the batting or be in the middle order", he said.
Former captain Adam Gilchrist has insisted it would be "business as usual" for Australia on the sledging front as soon as they come under pressure.
Australia: Tim Paine (capt, wk), Aaron Finch, Ashton Agar, Alex Carey, Travis Head, Nathan Lyon, Glenn Maxwell, Shaun Marsh, Michael Neser, Jhye Richardson, Kane Richardson, D'Arcy Short, Billy Stanlake, Marcus Stoinis, Andrew Tye.
"The level of expectation has been high around the team for a while, it doesn't get higher than being number one in the world".
"Internally we know what's right and what's wrong, and that's what counts". We'll be judged exclusively on our actions going forward.
"Words are words, come Wednesday, it's time for us to act on those words and show it by actions".
Morgan needs 110 runs to overtake Ian Bell as England's leading run-scorer in ODIs.
Confirming Jos Buttler will slot back into England's line-up following Sunday's shock six-run defeat to Scotland, Morgan said his side have to learn from that surprise reverse in Edinburgh.
The 29-year-old MacLeod previously played for Warwickshire and Durham, finishing as their top scorer in Twenty20 cricket in 2014 with 358 runs at an average of 44.75, while he has spent the early part of 2018 in Hampshire's second XI.
"It's no good losing the lesson and the game, you've got to take something from it", he added.