The Monaco derby is one of the most famous and highly anticipated football matches in Europe. The game between Monaco and Lyon has been going on for years and it has always been a thrilling spectacle to watch. However, this year's edition was different from previous ones as Monaco had brought in a new central striker, Ben Yedder.

The introduction of Yedder as a central striker has been a significant development in the team's tactics. The French international has shown great talent and potential, and he has already impressed with his performances during the pre-season. He has scored several goals in the league and has become a key player for the team.

One of the biggest changes that has come about due to Yedder's arrival is the formation of the team. The team now features a four man defense with three defenders and two strikers. This change in the formation has allowed the team to create more space in their midfield and have better chances of scoring.

Another change that has been made is the use of the back four. The team has decided to play a 4-2-3-1 formation which has resulted in a more balanced attack. With the addition of Yedder, the team can now create more opportunities for their attackers and score more goals.

Overall, the introduction of Yedder as a central striker has been a positive development for Monaco. The team has been able to improve its tactics and create more opportunities for their players. It remains to be seen how well the team will perform against Lyon next week, but with Yedder at the helm, there is no doubt that they will be a strong contender for the title.