My advice is to not change too much imidiately...I will start season with Lindelof with Maguire,Shaw and Bissaka,keeping Lingard on the IW on the right side,and keep Martial with Rashford in Attack,its important when you sign new players if they are young do not play them in first 11 immidiately,give them time to addapt,and also Maguire and Bissaka are also new signing so you have 7 new players on the field in first season,all with young age,you need to give them time to addapt,learn language and so on...