The Juventus star uploaded a snap of himself saying he was on route 66 but with two very red items accentuated.
The France international was wearing a red cap and red boots in an otherwise largely black and white image, which is likely to send Red Devils fans into a frenzy.
Reports tonight claim a move is just days away and Pogba has done little but add a lot of fuel to the fire.
The midfielder joined Juventus from United just four years ago on a free transfer.
United are set to pay a massive fee in order to bring him back to Old Trafford but he could prove to be a real boost for Jose Mourinho.