Dortmund are focusing more on getting new players to perform for them whenever they sell the old ones that have done incredibly well and serve their purpose in the team. They are not the type that keeps players for a very long time without selling them off, they’re more concerned about the money they get from selling those players than the trophies they’ll get to win from keeping their best players. If Dortmund have been the type that nurtures their best players well and not rush into selling them, they will be a tough challenger to Bayern Munich every season and won’t find in easy winning the trophy back to back.
Guirassy is a great striker and it was for their own good they didn’t sell him, they’ll see his use more this season. Also, Dortmund owners are just into the business for the money making only, not also for the future prospects of the team to boast in the presence of others how many trophies they’re accumulated over the years of their existence. They should do well this season but I’m sure they’ll sell of their best players next season again when good offers come for them.
Dortmund is no stranger to exploiting the transfer market to generate significant revenue, consistently receiving high bids to sell their star players. This season, they sold Jamie Gittens to Chelsea for a fantastic price, a move Dortmund management has made in spades.
Indeed, if Dortmund didn't sell their star players, they would certainly be very strong with a number of top-tier players. But that's unheard of for Dortmund, selling their star players and then recruiting other talented youngsters. So, they lacked a stable force to compete with Bayern Munich, allowing Bayern Munich to easily secure the title.