Everton are hopeful of confirming the £25m signing of Burnley’s England defender Michael Keane on Monday.
Keane, 24, is expected to undergo a medical in the next 24 hours before completing the formalities of his move.
Everton will also officially announce the signing of Malaga’s Spain under-21 striker Sandro Ramirez.
Keane’s signing, and the completion of the Sandro deal, takes Everton’s spending to more than £90m in this transfer window.
Everton have already signed Sunderland’s England’s Under-21 goalkeeper Jordan Pickford for up to £30m and brought in Ajax captain Davy Klaassen in a move worth almost £24m.
Nigeria striker Henry Onyekuru arrived from KAS Eupen in Belgium for £7m – although he will spend the next 12 months on loan at Anderlecht.
Keane’s expected arrival will not be the end of Everton’s big spending, with manager Koeman determined to test Swansea City’s resolve to keep 27-year-old Iceland midfielder Gylfi Sigurdsson.
The Toffees may also conduct further business with Burnley this summer after reports talks have opened over striker Andre Gray.