Titel: Should i sell my players at the end of the season (can a mod change my titel please)

When i went from first level to second level all my players lost some value. Some players even lost 100-250k worth of value each. So i was thinking would i be wise to sell many of your players at the end of the season and buy other players in the new seasons? This way I don´t lose my capital.

So the value of my players at the end of the season and at the beginning of the new season woud be the same.

Should i do this or not? Let´s say i have enough tokens for this.