You should actually mention who would buy them for 123m else you would be another Woodward.
I don't think it would be that hard to offload them.
Martial - Could be part of a swap deal? I could see him at Spurs and £50m as part of an exchange seems a fair price.
Lingard - A lot of clubs have shown interest in the last few weeks. Again, £25m in todays market with at least 5/6years left in him and his form? Bargain
Matic - Rumours Roma/Jose want him. £8m is about right.
Lindelof - Has been part of one of the best defences in the league last year and generally has been good + still only 26. £35-40m shouldnt be hard to achieve.
De Gea - No problem selling, Mata - a few Spanish clubs have been linked, Romero heading to America.