The deal is not yet finalised buit it appears that Swansea are set for a transfer breakthrough, with Las Palmas' 28-year-old Roque Mesa set to join the club.
The midfielder had also attracted interest from the likes of Sevilla and Roma but the 'Swans' appear to have won the battle for his signature.
Paul Clement made signing a midfielder a priority this summer after he narrowly guided his side to Premier League safety last season and Mesa, who boasted a pass completion percentage of 91.4% in the Spanish top flight last season, is seen as just the man for the job.
The former Levante man only made his La Liga debut two years ago, but has impressed in the top flight and now looks set to test his skills in the Premier League.