It was feared Johnson would need an operation to cure the problem but Eriksson said he was remaining hopeful that course of action could be avoided.
"He´s been to see the specialist and for now we think that he´s going to have a special injection and hopefully that will be it," the Swede told the club´s website. "We are not talking about operating at this moment, so I hope he can start training on Monday, but we are not sure yet."
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