His future is not secure, the player who would have to leave after Onana's arrival, makes an impact

The arrival of André Onana is almost a fact, Manchester United has already met with the goalkeeper to agree personal terms and during the next week his signature could be made official, even so, his arrival to the team could bring a cost that Erik Ten Hag would have to take into account. 

For the first time in over a decade, the Red Devils made the decision to change goalkeeper, although this story has been going on since early summer, it is now a fact that the club will have a new goalkeeper; after the unsatisfactory departure of David de Gea, which was confirmed by social networks, this caused some dissatisfaction from the fans who expected another way to dismiss the Spanish goalkeeper. 

However, things turned out that way and now Ten Hag would be ready to have his replacement; the arrival of Andre Onana brings with it an air of a new era and hopes for titles, the coach is adjusting his style of play with the arrival of his new reinforcements, for that reason De Gea would not be the only one who would be impacted by the arrival of the Cameroonian goalkeeper. 

Dean Henderson, who is now the first-choice goalkeeper for Ten Hag to start the pre-season tour, could see his participation in the team affected, because with Onana being the first-choice goalkeeper, in addition to the possible arrival of Zion Suzuki, Henderson could leave the club and there is talk that he would be in the sights of Nottingham Forrest, so the club would have to make a radical change in goal. 

Maguire could also be affected by Ten Hag's style of play.

The signing of Andre Onana could see Ten Hag sell Harry Maguire anyway before the end of the summer; several Premier League clubs have shown interest in the defender. On top of that Maguire has not fitted in very well with the manager's style of play, who likes his defensive side to be comfortable with the ball at their feet, so his sale could bring in a younger defender who might be able to adapt to Ten Hag's idea.