Everton will reportedly attend a Home Office hearing in London on Friday to try to acquire a work permit for Argentina international Ever Banega.
Toffees manager David Moyes is said to be interested in signing the 21 year-old on a season-long loan from Valencia with a view to a permanent transfer.
However, it is claimed there could be complications with the application because the winger has not played in 75 per cent of Argentina's full internationals over the past two years.
Banega is highly-rated having been signed by Valencia for around £15million 18 months ago, although a failure to settle meant he spent last season on loan at Atletico Madrid.
Last year, Everton's attempts to sign Inter Milan striker Victor Obinna on a similar deal floundered when the work permit application for the Nigerian was rejected.
Moyes is also said to be determined to bring in another centre-back, with Middlesbrough's Robert Huth an alleged target along with Philippe Senderos of Arsenal.