Pochettino is trying to talks with lukaku about the possibility for him to come back again into the main squad. Let's wait for what response will be given by lukaku. The club can't always rely on jackson as the only striker. It's very difficult for jackson as he has not yet got a lot of experience in the premier league. We do know that how competitive premier league is right now. The only best solution to put lukaku in again in the squad. Chelsea will not need to waste money to buy a new striker.
Lukaku has been helping intermilan to achieve UCL final. It shows that if lukaku is still a good choice for the club.
I think it will be difficult because in some other news now Pochettino's relationship with Lukaku is getting heated and the possibility that he will not be in the Chelsea squad is spreading now and it is said that he is currently left in the Chelsea u21 squad and ignored by Pochettino.
It is difficult actually for Lukaku and his future is getting darker now because forcing to stay also if Pochettino does not want in the main squad it will be useless.
Lukaku's current problems are too complex that he is staying too difficult and deciding to leave too no one is willing with his high price.