Been, who was a player for Feyenoord, has been impressed by Hartjes' skills, saying he is a "great player" who makes a big difference to his team. He also highlighted Hartjes' ability to win the ball back and his strength in coming back from two cruciate ligament injuries. Been also praised Hartjes' vision and ability to read the game, saying he is a "dragging player" for Excelsior. According to Been, Hartjes is a player who can make a team better, and he is always a player who is a pleasure to watch. Been also praised Yegoian, saying he has the qualities to succeed at the highest level and is always looking to improve.