If new quality players are not brought into the club Thiago Motta will not be able to achieve a good result with these current players. Juventus has little financial problem but the management need to sign players to support Motta because he is a good coach and can achieve success for the based on his skills and experience.
Next season will not be a season that Inter will dominate like last season because many clubs are reshuffling their team to strengthen it and make sure that they are in a good form for next season competition.
Motta will adjust the existing players and add some players who have been recruited maybe it's because of Motta's desire to buy players, I think Motta should be able to train existing players to play well again this depends on the coach who handles it because of the previous Juventus squad is not bad it's just that Allegri's strategy is not good so Juventus is declining because of his performance.
Looking at Motta's achievements with Bologna we see he is a great coach when he is officially at Juventus it will be better maybe the Serie A competition will be tighter again while Inter Milan will not decline more sharply they may still remain consistent with their great performances like last season, and we will see how next season maybe some other clubs will dominate the standings.