#6: David Ospina
David Ospina has been Arsenal's main goalkeeper for European matches but that situation is about to change.
With Bernd Leno reportedly coming in, Emery will likely Petr Cech the substitute keeper and it is extremely likely Arsenal will sell David Ospina to finance the move.
The Daily Mail reports the Colombian could be sold to Mexican side Tigres. But he is believed to be more open to a move to Turkey over Mexico.
#5: Danny Welbeck
Danny Welbeck earned a place in England's world cup team with 5 goals last season but is linked with a surprise move to Besiktas.
Arsenal currently has good attacking options in Lacazzette and Aubameyang plus a rumor of a loan offer for Ousmane Dembele is also spreading. Arsenal is also interested in signing Mario Gotze for 18 million.
Selling Welbeck for getting some money wouldn't be a bad option.