Paramount Skydance chief David Ellison is in talks with major private equity firms to join his possible bid to buy Warner Bros. Discovery – a megadeal that could cost upwards of $60 billion, The Post has learned. Potential investors weighing the WBD deal include Apollo Global Management – the buyout giant that in spring 2024 had made a $26 billion, debt-fueled offer for Paramount before ultimately losing that race to Skydance, people with direct knowledge of the situation said. Led by