The US actor will play Mysterio in Spider-Man: Far From Home, which will see British star Tom Holland reprise his role as the web-swinging superhero.Holding a classic Marvel comic with iconic Spider-Man nemesis Mysterio on the cover, Gyllenhaal captioned the post, “I just realized I’m not playing Spider-Man”.In the video, Gyllenhaal appears to be very shocked and mouths the words, “Woah”.Spider-Man: Far From Home sees Peter Parker embarking on a global adventure and has been described as grander in scale and funnier than Homecoming. Shares in Cenovus, Canadian Natural soar on crude production cutsGyllenhaal had been rumoured to be in the film and confirmed the news on Instagram on Wednesday.It’s a amusing way to reveal his role – made funnier by the caption: ‘I just realised I’m not playing Spider-Man, ‘ which is a nice nod to the time Gyllenhaal nearly replaced Tobey Maguire in Spider-Man 2 (Maguire injured his back before the shoot, Gyllenhaal trained to step into the role, but Maguire recovered in time). The character was introduced in The Amazing Spider-Man #13 back in June 1964.Jon Watts is returning to direct the sequel to Homecoming, which earned $880 million (£656,216,000) worldwide. He is next set to appear…