"which involves him" is a grammatically correct and usable phrase in written English.
It can be used to provide additional information or clarification about a subject or action. Example: John is responsible for leading the project, which involves him overseeing a team of designers and coordinating with clients.
The Conservative peer is a Foreign Office minister with responsibility for international energy policy, which involves him travelling around the world setting out British energy policy to foreign governments.
There is a grotesque incident that shunts him from nuisance and a bit nearer to tragedy, which involves him bingeing and then basically out-shitting the capabilities of modern plumbing.
Here, he leaps off a 120ft ledge, holds his breath underwater for an unfeasibly long time, hangs off the side of a plane in flight, and does a rather natty with-one-bound-Jack-was-free escape, which involves him, hands bound, shinning up a pole upside down.
Michener, the pianist/composer behind it, spent years developing a contemporary approach to the piano, which involves him putting an array of strange objects inside the instrument ("preparing" it in a similar way to John Cage), but he also uses pick-ups and microphones to amplify it – turning it into an electronically enhanced acoustic music machine.
He has begun playing a superbly wry game with me, which involves him hiding behind the curtains for six hours while I ring the bell over and over.
He eventually arrives at an army base to prepare for a "suicide mission", which involves him riding a spacecraft into outer space to save the world from an alien ship invading Earth.
Paddock became known for his unusual finishes, which involved him leaping with widespread arms across the finish line.
But we know that Philippoussis is superfit after his gruelling training regime of the past year, which involved him running up stairs until he had to crawl.
He has helped engineer mergers & acquisitions involving billions of dollars, including the acquisition of the Hartford Fire Insurance Co. by I.T.T. in 1969, which involved him in a good deal of public controversy a few years later.
According to the BBC, LaBeouf told students in the lift that he was invited by the union's president when he was involved in an art piece in Liverpool last year, which involved him setting up his own call centre.
Most disappointingly, one of Rock's skits, which involved him going to speak to black cinemagoers about their thoughts on the nominees, was almost identical to a piece he did during his last stint as host.
