Michael Carrick has done all he can. It’s now up to Manchester United to decide which managerial path they want to embark on after returning to the Champions League. Last week’s 3–2 victory over Liverpool not only completed a first Premier League double over their arch-rivals in a decade, but it sealed United’s return to the big time. They’ll be back among Europe’s aristocracy next season, and Carrick won’t want their positive momentum to cease during the remaining weeks of 2025–26. A trip to the Stadium of Light is up next this Saturday, with United poised to enter the contest with an impressively clean bill of health. In fact, the visitors could be full strength for the weekend’s clash. Lisandro Martínez Back From Suspension Martínez was sent off against Leeds United for a hair pull last month. | Visionhaus/Getty Images While Ayden Heaven has done a sterling job in the absence of Lisandro Martínez, the Argentine is expected to return to Carrick’s starting XI after serving a three-game suspension.…