The Dutch international was signed on loan from Villarreal by then-Swans manager Michael Laudrup in summer 2012.
And having scored twice in Capital One Cup final to bring the south Wales club their first piece of major silverware, De Guzman signed a second loan deal for the 2013-14 season.
Now Sky Sports Italia claim Swansea are set to bring the 28-year-old back to the Liberty Stadium.
But Doumbia is apparently unhappy at the club, having return to Moscow on loan in August.
Now back at Roma under new boss Luciano Spalletti, the 2015 Africa Cup of Nations champion is being linked with a permanent move away with Swansea keen to add him to compete with Bafetimbi Gomis for the starting striker role.
Curtis 'delighted and proud' to be named Swansea manager
However, with interim manager Alan Curtis currently in charge at the Liberty and no permanent manager set to take over in the summer as of yet, both players may be reticent to commit permanently to the team.
Swansea are currently 17th in the Premier League, sitting precariously just one point above the relegation zone and are desperation to avoid the drop with a new bumper TV deal kicking in next season.
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