From Spider-Man News:
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In this case, it appears that another Iron Man supporting character, and a huge fam favorite, may be making her return to the MCU in the film. A report has surfaced claiming that Pepper Potts will return to the MCU in Spider-Man: Homecoming. If this report is in indeed true, we have Sony to thank for bringing Gwyneth Paltrow back, as they were willing to spend big money on getting talent for the film. This included Paltrow, who’s contract had expired, and seemingly was never renewed by Marvel and Disney.