Do Agent Coulson Going To Reappear In Avengers 2 ?

There might be a very little possibility that Agent Coulson will going to appear in Marvel's Avengers 2 movie,because I think that Loki is the one who killed Agent Coulson in The Avengers and hence to hide this secrete from Loki and DR. Zola (As appeared in Captain America The Winter Soldier in AI (Artificial Intelligence )form through one algorithm. ) & also from some other corrupt S.H.I.E.L.D. people who works for HYDRA, hence the chances of seeing the Agent Coulson in Avengers 2 is little less.Also In recent episodes of Agents of S.H.I.E.L.D they have shown that how S.H.I.E.L.D people brought Coulson from dead to alive,and that place called Tahiti was in very secure area, where they(S.H.I.E.L.D people) did that experiment on Coulson,It was very complicated procedure to bringing back Coulson from dead,and also shown the source (an Alien) that helps Coulson to bring back from dead.And I guess,Loki is also not going to reappear in Avengers 2, because in Avengers 2 there will be one new villain called Ultron and not only Ultron but Quicksilver and sister Scarlet Witch are also going to play as villain at the beginning of the movie but later on they both join The Avengers.According to Marvel's comics,the “brother-sister act” of Quicksilver and sister Scarlet Witch begin their erratic careers as villains but join The Avengers.In the film, they may be working with Baron Strucker in the beginning, potentially all working for HYDRA – or whatever faction is playing espionage games with S.H.I.E.L.D.