It’s really great that Spider-Man came to the MCU, because they’ve set up a really cool way of connecting Iron Man and The Vulture- read more below!
“Ahead of an imminent new trailer release for Spider-Man: Homecoming, USA Today has a new profile of the film’s primary villain, Michael Keaton’s Adrian Toomes aka The Vulture. Instead of the elderly business man from the comics, this version of the character runs a NYC salvaging company that cleans up property damage after incidents such as the Chitauri invasion (perhaps this is where all those Damage Control rumors are springing from).
Toomes is less than thrilled when a government-backed company, owned by Tony Stark, takes over his contract (after some sort of accident). Backing up Vulture are Shocker and The Tinkerer, played by Bokeem Woodbine and Michael Chernus. Now out of work, Vulture and his ragtag crew of ex-employees begin reconfiguring all the weird alien tech they’ve found over the years into weapons too powerful for local law enforcement to handle. 
According to Keaton, Toomes feels like a victim. “Some people see themselves as victims — he sees himself a little bit like that. He probably would have a strong argument that he never got a fair shot — a lot of ‘Why not me? Where’s mine?’”
Director John Watts adds that it was fun to pick over past Marvel films for the tech that Vulture, The Tinkerer and Shocker would be using in Homecoming, calling it, “neat junk from all the other movies.” He continued, “It’s a really great starting point for the villains to have the Vulture picking over the stuff and finding the valuable exotic elements and having the Tinkerer assemble into something that could be used.““
Source: ComicBookMovie
