Arsenal and Juventus always end up looking out for same players. Both the clubs hold excellent reputations in developing youngsters, thus, we understand when both see the same thing in players and end up looking out for same players at all times.
While Juventus won the deal to sign Alvaro Morata, Arsenal too were looking out for the player and hence very strongly linked with the 23-year-old. And it seems obvious that Arsenal would not have accepted or allowed Real Madrid the buy-back clause for the player.
According to French outlet Le10 Sport, Arsenal were also looking out for Mario Lemina before he moved to Juventus. However, the player has not gotten much time on the first team as much as he would have wanted. The Le10 further reports that there are many clubs interested in the player and hence the situation is monitored by Arsenal , Leicester City, Napoli, Valencia, Sevilla and Borussia Dortmund.