Alisson was among those to report to the AXA Training Centre on Tuesday as he rehabs his hamstring injury, while Curtis Jones resumed preparations for Man United.Liverpool will host Man United on their return to Premier League action on Sunday but will do so without their No. 1 goalkeeper.Alisson is not expected back until after the November international break, with the Brazilian due to miss up to eight games after picking up a hamstring injury against Galatasaray.That meant he could not join the Brazil squad for their friendlies against South Korea and Japan this month either.But he watched the latter – a 3-2 defeat for Carlo Ancelotti’s side – alongside Japan captain Wataru Endo at the AXA Training Centre on Tuesday morning.Endo was also not with his national team having suffered a hamstring issue of his own, with the midfielder instead working on his recovery on Merseyside.It remains to be seen if he will be ruled out of the clash with Man United, though indications are that it is not a serious problem for Liverpool’s No. 3 and he could be involved.Jones was one of the few fit senior players not called up for international duty this month and he shared a photo of Alisson and Endo watching the friendly on Instagram.His presence at the AXA suggests training work has now begun ahead of the return of Arne Slot and his wider squad later in the week.Joe Gomez and Federico Chiesa were also left out of their national teams and should be part of Slot’s plans for Sunday’s 4.30pm kickoff.It will have been a quiet day at the club’s expanded facility as Rob Page and his U21s travel to Crewe for their EFL Trophy tie on Tuesday night. Typically the U21s squad are used to make up the numbers in these early first-team sessions towards the end of an international break.But with the likes of Kaide Gordon, Kieran Morrison and Fabian Mrozek instead expected to be involved against League Two opposition later in the day, Jones and Co. will likely have been limited to gym work.Tuesday night does, however, bring the final international fixtures for those called up, with Giorgi Mamardashvili, Milos Kerkez, Dominik Szoboszlai and Alexis Mac Allister due to be in action.It is likely that the squad will begin to report back on Wednesday and the workload will increase in anticipation of Man United.