Getting a DM wouldn't have stopped us conceding half a dozen goals in away games IMO, neither would it have turned home draws into wins.
If we spend £30 on DM he better be able to contribute a huge amount to the team play and I don't think any of the names touted have a true "all round" game. Great players, but mostly defensive distributors.
I'd rather we sorted out our lack of chance creation and conversion and covered quality to stop us hacking shit up whenever Ramsey, Ozil, and Walcott are injured.