Declan Rice and Jurrien Timber will have their Arsenal medicals over the next 72 hours after deals were agreed with West Ham United and Ajax.
Personal terms for both players have been agreed in principle and both could be Arsenal players by the start of next week.
Rice is set to join in a £105m deal from West Ham, while Timber will join in a deal which could reach £38.5m.
It would take Arsenal's spending in this window beyond £200m - further proof of the backing manager Mikel Arteta is receiving from Edu and the board.
The double signing will mark a busy spell of incomings and outgoings for Arsenal, who secured the £65m signing of Kai Havertz last month.
More incomings at Arsenal have not been ruled out. An attacking right-sided player remains a position they are looking at. It is likely any further additions will be contingent on sales.
