Arsenal needed reinforcements and here they are:
[1] Havertz (Attacking midfielder) ✅
[2] Declan Rice (Defensive midfielder) ⏳
[3] Jurrien Timber (Right Back) ⏳
Aside from them^^, we have players coming back from loan who had a very good season at their loan spell for example Florian Balogun. I think this season there will be lot of expectation from Arteta and his men.
Folarin Balogun scored more than 20 goals while on loan and did well as a player on loan. Some other clubs will also be interested in signing him as a first team player, and he will have to choose between that or going back to Arsenal to struggle for a position to play in every game. Marseille is rumoured to have an interest in him.
Maddison already agreed with totenham to leave from leicester city. Since leicester city has been relegated and maddison has no choice other than leaving from leicester city as soon as possible before the upcoming season.
It is a very good decision for his career not to go and play relegation football, he will be good in Tottenham, but Tottenham will need more players to really show an improvement.