TMW says Tottenham's search for a right-back has led them to sizing up a move for Castagne.
Jose Mourinho wants to sign competition fro Serge Aurier after allowing Kyle Walker-Peters to leave in January.
Castagne, who operates as a wing-back but can also play full-back, only has a year left on his current deal and Spurs have made contact with the 24-year-old.
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