Some stats on Gylfi and why he costs what he costs..
In the last three season in the Premiership, only four players have assisted more goals
Here is in the top five in the Premiership since August 2014: Cesc Fabregas, 37, Mesut Özil, 33, Christian Eriksen, 32, Kevin De Bruyne, 27, and Gylfi, 26. Not bad for a player who plays for Swansea.
Since Gylfi played his first match in the 2011 Premier League (2011), he has scored more goals from the free kick than any other player
The Icelandic national has scored seven goals directly from the free kick, one more than Robert Snodgrass, Eriksen and Juan Mata.
Gylfi covered more ground in the Premiership than any other player in 2016/17
The fact that Gylfi went over 433 kilometers in last season's games, more than any other player.
Only one player scored more goals against the top six teams of the Premiership last season
Gylfi scored five goals against the top teams last season. Only Jamie Vardy (6) scored more against England's best team.
Gylfi setup more dead ball goals than any other player in the Premiership last season.
Gylfi assisted or scored 48.9% of Swansea´s goals last season.
Only Sunderland's Jermain Defoe (58.6%) and Romelu Lukaku (50%) at Everton (50%) score higher.
Gylfi is both Swansea's top-goalscorer (34) in the history of the top league and with most assists (29)
He has done all this with questionable quality of strikers to say the least..