The Post credits scene in Far From Home shows that Fury and Maria were Skrulls setting up Secret Invasion. Other hints at this story include a lot of the Phase 4 villians to plan ahead for Dark Reign. Seige was hinted at when the Asgardians moved to "New Asgard" in Thor Ragnarok

Dark Avengers in the MCU

Justin Hammer(Sam Rockwell)

Zemo(Daniel Bruhl)

General Ross(William Hirt)

Taskmaster(whoevers playing him in Black Widow)

Ghost(Hanna John Kamen)

Bullseye(Wilson Bethel)

Maybe Beta Ray Bill(Seth Rogen)

Justin Hammer is in the MCU because his character is the same exact character as Osborn's pretty much. Theres Hammer Industries, Iron Patriot was used by Rhodey, but Hammer can steal the suit. Taskmaster and Zemo are setting up this team by being the villians of Falcon and Winter Soldier and Black Widow respectively. This could be a chance for General Ross to go Red Hulk. For the sake of continuity, they wont use Ares because of Warner Bros and Venom/Scorpion because of Sinister Six. It is still very possible that the Netflix characters can connect to the larger MCU and the news guy in Far From Home was also in Daredevil did.