Swansea City are expecting a busy 24 hours in the transfer market with Gylfi Sigurdsson returing to the Liberty Stadium from Tottenham Hotspur in a straight swap with Ben Davies and two other deals also going through. Michel Vorm is set to follow Davies to White Hart Lane in a separate transfer while Jefferson Montero, the Ecuador international, is expected to complete a £4m move to Swansea.

Negotiations with Spurs were being finalised on Monday night after several days of talks which paved the way for Sigurdsson to undergo a medical with Swansea. Davies moves to White Hart Lane to become the club’s first-choice left-back.

Vorm’s future has been in doubt ever since Swansea signed Lukasz Fabianski from Arsenal on a free transfer at the end of May. Fabianski agreed a four-year contract at Swansea and made it clear that he was joining to play first-team football. Vorm, who had claimed to be in the dark about Fabianski’s arrival, will join Spurs as understudy to Hugo Lloris.

Although losing Davies, a Wales international who has flourished since breaking into the first-team a little under two years, is a blow to Swansea, Neil Taylor is eager to seize his chance after losing his place following serious injury.

Spurs had proposed a straight cash deal for Davies, valued at close to £10m, but Swansea were keen to try to bring Sigurdsson, who has also been the subject of interest from Crystal Palace, back to the club where he excelled while on loan in the second half of the 2011-12 season.

Montero, who plays for the Mexican side Monarcas Morelia, is also regarded as virtually a done deal, with some haggling over the final fee expected to be resolved in time for the winger to join up with the Swansea squad this week.