Regarding Him ( hazrat Isa (as) being the umati of Hazoor SAW
Sayyidna Isa (alayh issalam) will not come into the world at that time designated as Prophet, but he would come to lead the Muslim community as the Khalifa of the Holy Prophet (sallallahu alayhi wasallam), but the personal station of prophethood that he has will not be taken from him
Hadeeth narrated by Al-Bazzaar on the authority of Jaabir . He said, “‘Umar copied part of the Torah in Arabic, brought it to the Prophet , and began to read it to him. As he read, the Prophet’s face changed color. One of the men of the Ansaar said, "Woe to you Ibn Al-Khattaab! Can you not see the face of the Messenger of Allaah?’ Thereupon, the Prophet , said, ‘Do not ask the People of the Book about anything for they will not guide you when they have gone astray. (If you listen to them) You will either disbelieve in what is right or believe in what is false. By Allaah, if Moses had been alive today, he would have been obliged to follow me.’”
Same applies to Hazrat Isa (as)
At this point, there is an important issue we must stop and consider. In the Qur’an and in the hadiths, there is no doubt that ‘Isa (as) will return to earth during the End Times. Today, on the other hand, some people disregard the evident proofs regarding this return, and suggest that it is possible that ‘Isa (as) will return after the Prophet Muhammad (saww) comes, secondly, there is no contradiction between the fact that Muhammad (saas) is the last Prophet and that ‘Isa (as) will return to earth. When ‘Isa (as) comes for the second time, he will not bring a new religion but will be subject to the true religion communicated by the Qur’an and the Prophet Muhammad (saas).
With reference to the episode of Dajjal, Sayyidina 'Aisha (may Allah be pleased with her) reports that "Sayyidina 'Isa (A.S) will descend and slay Dajjal. After this Sayyidina 'Isa (A.S) shall rule over the earth as a just leader and a benevolent sovereign for a period of forty years."
(Musnad Ahmad)
It doesn’t say prophet or Rasool
Sayyidina Abu Huraira reports that the Apostle (Sallaho Alaihe Wassallam) of Allah observed: "What will you be like when the son of Mary shall descend among ye and a person among ye will discharge the office of Imam (leader in Prayers)."[The implication is that Jesus(A.S) will not act as the leader of Prayers.He will offer Prayers behind the already existing Imam of Muslims.]
(Bukhari, Kitab Ahadith Anbiya, Bab: Nuzul Isa; Muslim, Nuzul Isa; Musnad Ahmad, Marwiyat Abu Huraira)
Jabir b. Abdullah relates that while narrating the episode of Dajjal, the Holy Prophet (Sallaho Alaihe Wassallam) observed: "At that time Christ, son of Mary, will suddenly descend among the Muslims. A congregation will be assembled for prayer and he shall be asked: " O Spirit of God, come forward and lead (us in Prayer)." But he will say, 'No, your own Imam shall step forward and act as the leader.' Thus when the Muslims will have offered the morning Prayer, they will set out to do battle against Dajjal. When that liar will look on Christ (A.S), he will start melting like salt in water. Christ (A.S) shall advance towards him and slay him. And it will come to pass that every stone will cry out: 'Spirit of Allah, this Jew is hiding behind me.'
Not a single follower of Dajjal will escape slaughter."
(Musnad Ahmad, Basissila Riwayat Jabir b. Abdullah)
Nabis of time always act as imams in prayers this hadiths proves that hazat Isa (as) will not be acting as a nabi but a umati of Hazoor (saww)
Uthman b. Abi al-As reports that he heard the Prophet of God (Sallaho Alaihe Wassallam) as saying: "And Christ son of Mary will descend at the time of morniing prayer. The leader of the muslims will say to him, "O spirit of God, Be thou our leader in prayer." He will answer "The people of this Ummah are leaders unto each other." At this, the leader of the muslims shall step forward and lead the prayers. When the prayer is over, Christ (A.S) will take hold of his weapon and advance towards Dajjal. Dajjal, on seeing Christ shall start melting like lead. Christ (Sallaho Alaihe Wassallam) will slay him with his weapon. The companions of Dajjal will be defeated. They will flee away, but will not find a hiding place anywhere. Even the trees will cry out,"O pious, this infidel is hiding behind me," and the stones will say, "O pious, this unbeliever has taken cover behind me."
(Musnad Ahmad, Tabarani, Hakim)
Khaatamun Nabiyeen Sual Allahu 'Alyhi WaSallam said:
“In my Ummah, 30 liars will be born. Each will claim Prophethood and claim to be a Prophet, even though I am the last Prophet and there shall be no Prophet after me."
(Tirmidhi; Abu Dawood)