Swansea City are understood to have rejected a second Everton bid for Gylfi Sigurdsson

Swansea have rejected a second bid from Everton for midfielder Gylfi Sigurdsson, Sky sources understand.

Toffees boss Ronald Koeman has been tracking the Iceland international for some time, with Sigurdsson missing Swansea's 10-day tour to the USA as the club felt he was not in "the right frame of mind to travel" as speculation about his future continued.

The Swans have always insisted they will not be forced to sell Sigurdsson and are believed to have snubbed Everton's latest offer, which is understood to be for £40m, plus an additional £5m in add-ons.

Everton have already seen their initial bid of £40m turned down, with the Swans understood to be holding out for £50m.

Swansea manager Paul Clement admits Gylfi Sigurdsson could leave the club if they receive the right offer Swansea manager Paul Clement admits Gylfi Sigurdsson could leave the club if they receive the right offer

The 27-year-old has been a key player for the south Wales side since he joined from Tottenham for £6.8m in July 2014.

Sigurdsson has scored 37 goals in 131 appearances during his two spells at the Liberty Stadium, having previously spent a four-month spell on loan from German side Hoffenheim in 2012.