Swansea City are signing Aston Villa forward Jordan Ayew in a deal which will see Wales international Neil Taylor go the other way.
Head coach Paul Clement expects the deal will be concluded on Tuesday with Swansea paying up to £5m - plus Taylor - for the Ghana international.
"I am pretty sure now we are wrapped up on things and we can focus fully on Southampton," he said.
But Benfica defender Lisandro Ezequiel Lopez will not be joining on loan.
The 25-year-old Ayew, whose brother Andre played for Swansea last season before joining West Ham for £20.