WI: Charles III of Navarre marries Margaret of Male(Flanders)

Is such a marriage possible, the two are 12 years apart and the earliest time this marriage can be consummated is late 1370's, the two are both heirs to the both Burgundies..
 
It seems pretty unlikely, because he renunced in many pretensions of his father on several provinces of France, to distance himself from French affairs.
if the wedding happen it will pretty likely that France and Castilla will allied to crush him (see The war with Charles II), his father let too many bad memory to let the french king accepting this wedding.
 
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