Iceland international Birkir Bjarnason has agreed to join Aston Villa and is expected to undergo a medical on Wednesday.
Basle have accepted a bid from Villa for the 28-year-old midfielder.
Bjarnason, who has played for Basle in the Champions League this season, has scored four goals this season and is seen as being able to add an attacking presence to Villa’s midfield.
Deals are also close for Barnsley duo James Bree and Conor Hourihane, with both set to arrive for a combined fee of around £3m.