City hearts were in mouths when Haaland suffered a foot injury during Norway's friendly with the Faroe Islands last week.
“It’s the movement in his foot that is the problem but it’s not a serious injury," said Solbakken.
"Had it been a final, I don’t know [if he would have still risked playing]. All parties agree it is probably a little too soon but it is not a career-threatening injury."
Haaland is there a doubt to face Liverpool, with an update from Guardiola and City expected later in the week.
Source: The Standard UK