In my opinion, the only possible way to take DeGea is to sell Szczesny.
You can't put 2 (expensive) roosters in the same house.
This may later be done by the Juventus. You're right, there's no way De Gea and Szczesny will be in the same place. I did not realize that the De Gea 4 - 5 year Contract reached 100 million.
If Juventus still want to get de gea, they inevitably have to sell Szczesny.
@stigmacryptonight if De Gea indeed signs for Juventus as a free agent, then theyll have to sell Szczesny to balance their books. Its pertinent to note that he has not agreed to sign for Juventus, as Manchester United are doing all they can to tie De Gea to a new contract. Juventus will become very strong if they can land him as hes one of the best goal keepers in the world.