The 23-year-old has missed the Treble winners last three matches and will not feature in the Club World Cup final against Fluminense on Friday evening.
Despite the interest in Haaland’s return to action, fans instead commented on the forward showing off his muscular legs in the photo.
‘There’s no way he wasn’t made in a Lab,’ one fan commented, with another joking ‘just one of his legs could feed a family for a winter’.
‘What are those legs,’ wrote a third.
‘Look at those legs,’ another commented, adding ‘He is back!’.
Haaland has scored 19 goals in 22 matches for Man City in all competitions this season.
The Man City star tops the Premier League goalscoring charts after netting 14 times.
The star had proved vital in helping Man City secure the Treble last season, scoring 52 goals in 53 matches.
Man City will be hoping Haaland can quickly return to full fitness to lead their defence of their Premier League title.
Pep Guardiola’s side currently lie fourth in the Premier League, five points behind leaders Arsenal.