Lovren, Matip and Fabinho will be back in January anyway so I suppose it's a moot point unless there's injuries over the Xmas period.
Lovren should be eased out going forward, he will need some time after his injury to hit form and don't think he is even in the medium term plan, he almost left in the last transfer window if the money was good. That said, cant see us buying anyone unless there is a bargain somewhere, hope to be wrong