On January 2, 1980, Allan and Brian entered into a contract whereby Allan sold to Brian a parcel of land for and in consideration of P100,000.00. Allan reserved to himself the right to repurchase the same. Because they were friends, no period was agreed upon for the repurchase of the property.

1. Until when must Allan exercise his right of repurchase?

2. If Allan fails to redeem the property within the allowable period, what would you advise Brian to do for his better protection?