After the Guatemalan's contract is up in December, he will be eligible to sign on a free transfer.
The left-footed Pappa is apparently sought by the Premier League club, as reports posted by MLS' official website have illustrated.
Pappa would leave Chicago on a free transfer, after the Illinois squad and league itself has refused time and time again to sell the player following interest mainly from the Eredivisie.
According to Guatemalan press, SC Heerenveen still appears as a viable option for the 24-year-old, as the club managed by Marco Van Basten has submitted more than one offer for the national team member.
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