The duke also obliged the de Clissons to pay a penalty of 4 000 livres, but refused to repair a damaged de Clisson castle, generally presumed to refer to the castle at Blain.

The castle of Blain had not been destroyed in its entirety so Olivier II undertook work in order to restore it.

Olivier II had the tower of the drawbridge rebuilt, the prison towers and its two curtain walls, the belfry, and the buildings of the Petit Château rebuilt.

Likewise in 1293, the lord of Clisson declared to the duke loyalty by rents which he gathered from the military districts around his castles.

[2] Like other great Breton lords, the Lords of Clisson began pursuing a policy of acquiring fiefs outside Brittany in the kingdom of France, which would ease the absolute grip of the Dukes of Brittany had on them.