The 23-year-old has been a regular feature for the Polish international side of late and featured in their recent 2-0 loss to England at Wembley.
Klich’s impressive form for both club and country has alerted a number of clubs to his abilities, prompting speculation of a winter move.
Stoke and Fulham are thought to be at the front of the queue for the talented midfielder, but face competition from a number of German sides.
His current employers are believed to value him at around £1m, but are hopeful that his price may rise when the window opens.
Klich joined PEC from Wolfsburg on loan in January before making a permanent move to the Eredivisie in the summer.
He has started the new campaign brightly, notching one goal and four assists so far.
Fulham boss Martin Jol is believed to be keen to bolster his options in the New Year in a bid to keep his side clear of the relegation zone, while Mark Hughes also sees Klich as the ideal man to help continue his Stoke revolution.
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