Jose's Transfer Job for Man United is not Done after Signing Pogba

Manchester United have signed four quality players in the summer transfer window under the management of new boss Jose Mourinho.
Yesterday, the Red Devils completed their latest signing by securing the signature of Paul Pogba.
Mourinho has done well by strengthening all the key departments since joining the Old Trafford club. However, Jose’s transfer job to adequately reinforce Man United is not done yet. The former Chelsea manager still needs to add more signings to complete the squad.
United do not have a top quality defensive midfielder. Blind is more of a central defender, Michael Carrick is mainly a deep lying playmaker and definitely past his best.
Moreover, Morgan Schneiderlin was mediocre last season. Not to forget, United missed out on signing Kante who left Leicester to join Chelsea.
As far as the defense is concerned, Mourinho needs an experienced central defender to lead the line. On the other hand, the Portuguese boss must reinforce his right back position as well. Darmian could not shine last season and 31-year-old Antonio Valencia is naturally a winger.
Last but not the least, Jose must look to strengthen the attacking midfield as well. Juan Mata does not suit Mourinho’s style of play, Depay is over-rated and Wayne Rooney is just not good enough any more.
The likes of Martial and Lingard are still learning and new signing Mkhitaryan is the only world class playmaker in the squad. In such a scenario, United must sign another proven quality attacker this summer.
After spending heavily to lure their transfer targets, should the Red Devils spend more on new signings this summer?