The transfer window was set up this week – after the arrival of the new reporting year under the financial rules of the Premier League.
Mail Sport understands that a number of clubs have deals until they can register the expenditure on the accounts of 2025-26 instead of 2024-25.
This year's window has so far been slow with relatively few controversial movements, apart from the £ 116 million from Liverpool for Florian Wirtz and the £ 62.5 million of the £ 62.5 million of Wolves' Matheus Cunha van Wolves.
Manchester City has been the most active, with Pep Guardiola who carries out a flurry of activity before the World Cup Club while building up his team.
However, that situation is likely to change now, with parties that are already at the limit for the profit and sustainability rules (PSR) this year to Tuesday.
Many do not want to expire the regulations, which can lead to the ultimate sanction of points deduction.
In the meantime, sources have announced that United's striving for Bryan Mbeumo from Brentford will lead to a positive conclusion.
United has submitted two failed bids for the Cameroonian Forward, of which the last £ 55 million plus £ 7.5 million was in add-ons.
It is understanding that the bees believe that 25-year-old Mbeumo is worth more than Cunha, a theory that, according to them, is supported by statistics from his time in West London.
Mbeumo scored 20 goals last season to Cunha's 15 and seven assists on the six of the Brazilian.
United feels that they have offered a fair price, but the player has told his club that he wants to move to Manchester and a breakthrough is the expected result, according to those with knowledge of the situation.