As much as possible, Atalanta must maximize the remaining matches in order to secure tickets to the Champions League. Of course, this opportunity is now within his grasp because UEFA has given five slots to teams in Serie A. However, Atalanta seems to have enough to win one more match to avoid being chased by Roma. Apart from that, Atalanta also has the opportunity to qualify directly for the Champions League if they are able to win the Europa League title, but this step is also very difficult because their opponent is Bayer Leverkusen. But I feel quite confident that Atalanta will advance to the Champions League through the fifth slot in the Serie A standings.
Atalanta only need to get one more point to secure their fifth position in Serie A and they have an alternative gate to go to Champions League. If they win the Europa League final match, they will directly be appointed for Champions League with a special slot, no need to care about their ending rank in Serie A.
The final match of Atalanta in Europa League will be very important for Roma too. If Atalanta win it, Serie A will have one more slot for Champions League and Roma will take that slot because risk for Roma to lose a sixth position to Lazio is very small.
Atalanta will not care about Roma but they will surely want to fight for themselves in the final match and want to lift Europa League trophy. Beating Leverkusen in this season is like an impossible task and it will stimulate Alatanta to get it.