Benteke not good enough.
In a perfect World someone like Shaqiri would suit us down to the ground.
Let's see what January brings.

can people please name these realistic strikers that can replace him?

I would like to know who we could easily get one to replace Teker and the other who is second striker to compete with

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Well said. What planet are people on who want to get rid? Form (including poor form) is temporary, class is permanent. Benteke is a top quality international striker who will come good sooner or later. I really can't see strikers of his ability queuing up to join a club in the relegation zone in the January window. The best we are likely to get is back up.

You are basically saying he is irreplaceable. Is that how much in the mire we have got ourselves in that a player who is disappointing, not scoring, and looks a bit out of place has to be in the team? Are we that stricken by incompetence that we can't get out there and look for another option?

Big chest and massive boobs

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I would look to get two good strikers in during the Jan window, with the fall back being one. It's a judgment call as to selling Benteke at that time but I would say keep him but needs a rocket up his a--e and possibly having to fight for his place maybe the motivation he needs because he sure is one lazy individual.
He frustrates me to death and is akin to a car with the hand brake permanently on!
I am also fed up with reading how he wins balls in the sir and has no one supporting him. He needs to release the brake and put himself about, yes Christian RUNNING THE CHANNELS and actually looking for ball instead of always wanting it on a plate. Getting stuck into the centre halves so they are always looking for him. He is s dream to mark as he hardly moves. As a centre forward he should be burying his chances. If only he had Wilf's attitude, determination and yes movement.
Much work to be done and quickly!!

Bring back Brolin

But you're criticising Christian Benteke for playing like Christian Benteke. He's not a forward who runs channels and the manager isn't asking him to run all over closing down. He's being asked to fall back into shape when we lose possession and let them have the ball in their half, just as we did under Big Sam. He's winning countless headers to no avail as we aren't playing off him with this narrow formation. Personally would like us to go 4-2-3-1 and get people on both sides of him then the flick ons would have more chance of being picked up. Right now Roy has got us playing a certain style in order to pick up points and build confidence. If we can grab a couple of wins and confidence grows maybe Roy might take the handbrake off a little. For now our forwards are feeding on scraps which must be as frustrating for them as it is for us.
As for this Tosun chap, that ship has sailed. There is no chance of him coming to us and there is no guarantee he can score in the prem if he did.

That's Life
And as funny as it may seem
Some people get their kicks stompin' on a Dream.
KEEP THE FAITH!!!!!