After spending the second-half of last season on-loan with Juve, Kolo Muani had his stay extended for the Club World Cup.
However, Juve are yet to settle on a fee with PSG over a permanent transfer for the centre-forward.
The Bianconeri are keen to keep hold of the France international, but he is now also attracting interest from United and Newcastle, says Foot Mercato.
On the United side, the transfer has accelerated after Eintracht Fraknfurt striker Hugo Ekitike's refusal, forcing the Red Devils to activate other solid leads: Kolo Muani is on the short list.
Newcastle, for its part, remains attentive given the situation of Alexander Isak. Anticipating a possible departure, the Magpies have made contact around Kolo Muani, convinced that his well-rounded game and international experience would make him a key part of their project.
Juve, meanwhile, also remain keen on closing an agreement with PSG.