The Norwegian has been absent since the start of December with a foot injury but Guardiola confirmed that he was in line to make his return at the Etihad Stadium on Wednesday evening.
“Apparently he will be selected,” Guardiola said of Haaland. “[This is] the first time he is back.
“Erling is an important player for us. Two months out, but he feels good - we have a training session [today], but apparently tomorrow he will be with us.
“We don’t have injuries - Manu[el Akanji] is back, training well he doesn’t feel his knee. John [Stones as well. That is the best news.
“The important part of season starts now. FA Cup, the Champions League is around the corner and of course the Premier League – it’s important that we have everyone available.”
Haaland remains the league’s joint top-scorer this term after firing Manchester City to a treble in his first season at the club.
While Julian Alvarez has successfully filled in for Haaland in the central striking role, Guardiola hinted that the centre forward could make an immediate return to the starting side.
Comparing Haaland’s possible return with the approach taken to Kevin de Bruyne’s own comeback after a long lay-off earlier in January, the Manchester City manager said: “Kevin’s was muscular with surgery, so it was a completely different approach.
“Erling’s was a stress on the bone, so a different approach. Step by step.”