The Red Devils have had an interesting summer - to say the very least. New manager Louis van Gaal has arrived to replace David Moyes in the Old Trafford hot seat, and whilst it took United some time to get going in the transfer market, they've exploded into life since the 2-1 defeat to Swansea City on the opening day.
Athletic Bilbao midfielder Ander Herrera and Southampton left back Luke Shaw joined before the start of the campaign, and now Argentine duo Marcos Rojo and Angel Di Maria arrived for a combined £76m from Sporting Lisbon and Real Madrid respectively. Ajax's Daley Blind has arrived for £14m, and Monaco striker Radamel Falcao is also poised to join on loan for the season.
Many thought that Falcao's arrival would be United's final business of the day, but there could yet be another late arrival at Old Trafford - and he'll be a familiar face to van Gaal, Rojo, Di Maria and Falcao.
Sampdoria goalkeeper Sergio Romero spent last season on loan at Monaco, and was one of the stars for Argentina as they made it through to the World Cup final. His best game was by far against the Netherlands in the semi-finals having been the hero in the penalty shoot out, and would reunite with his international team mates Rojo and Di Maria and ex-Monaco team mate Falcao if the reports from Italy are to be believed.
However, the key reunion would be with van Gaal. The Dutchman had Romero as his first choice goalkeeper at AZ Alkmaar, and that's where the 27-year-old made his name before moving to Italy with Sampdoria.
They are now willing to let Romero leave to secure a move to United, but the potential deal brings up questions over the future of Anders Lindegaard. The Danish international has long been David De Gea's backup at Old Trafford, but Romero figures to take that spot, which could mean a move for Lindegaard is in the pipeline.