In recent weeks, Monaco and Dortmund have announced the signings of key midfielders to strengthen their respective teams' depth.

One of the key players to be signed by Monaco is their experienced forward, Marco Verratti. The Italian international has been a regular in the side for several seasons now and has been instrumental in helping them win many titles over the years. He is known for his technical ability, dribbling skills and ability to score goals. However, Monaco's squad needs more experience in this position, so they have decided to sign him on a long-term deal.

Another key signing is their defender, Thomas Meunier. The Belgian international has been a vital part of the team since joining from Paris Saint-Germain in 2017. He is known for his defensive abilities and ability to make tackles and interceptions. However, Monaco also need to bolster their defense with more experienced players, so they have decided to sign him on a short-term deal.

Both of these signings will help Monaco to improve their current midfields depth, which could give them a strong foundation for future success. It's clear that both clubs have invested heavily in their youth academy and believe that these signings will help them develop young talent even further.