The Morocco international signed from Arsenal last summer will remain at Selhurst Park after penning a new two-year deal
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Jose Campana has joined Sampdoria from Crystal Palace for an undisclosed fee.
The London club confirmed on Tuesday that the former Spain Under-21 midfielder had travelled out to Italy at the weekend and that the final paperwork on the move had now been completed.
The Eagles signed him from Sevilla last summer but he made just six appearances for the club and joined German side Nurnberg on loan in January until the end of the season.
Having been initially released from Crystal Palace this summer, Julian Speroni has signed a one-year deal to prolong his long career at Selhurst Park.