Sigurdsson made 25 appearances for Tottenham last season, playing mostly as an attacking midfielder, but he saw time all over the pitch, seeing a handful of matches at wing, central midfielder and even defensive midfielder.
He scored five goals in league matches for Tottenham last year.
A return to Swansea might not be the worst thing for the Icelandic international. Besides a two-year stint at Reading, Sigurdsson had his best goals-per-match efficiency percentage with the Welsh side, averaging one score every three matches. For reference, only Wilfried Bony had more goals per match than that last year.
And it might not be the worst thing for Tottenham either. Christian Eriksen, who's only been at White Hart Lane for a season, is a gifted passer who collected 10 assists for Tottenham in all competitions last year.
He can be the "quarterback" of Spurs' attack this coming year, he just needs a few more appearances at attacking midfielder to settle in properly.
Frankly, I think Sigurdsson could find a long-term home at the Liberty Stadium. No one has settled into the attacking midfield role for Swansea, and the closest thing they have is 28-year-old Michu, who has looked more like a natural forward since arriving at the club.
If Sigurdsson does comes to Swansea, and with speculation mounting over the future of Michu at the South Wales club, per the South Wales Evening Post, the Icelander could fit in behind Bony and other new boy Bafetimbi Gomis in a facilitating role.