And midfield ace Karacan will be doing everything he can to put a smile on his old mate's face this weekend.
Harper, one of the last remaining characters left from Steve Coppell's reign, has gone to Sheffield United this season and is certain to leave Royals for good next summer.
And nothing would please the exiled midfielder more than seeing Reading beat their Steel City rivals at Hillsborough on Saturday.
Karacan is likely to return to the starting line-up in place of broken-jaw victim Brian Howard who joined Royals from the Blades in August.
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The Reading Chronicle