Nottingham Forest were the most active Championship club in this summer's transfer window- comfortably. But with so much money splashed, the pressure on the manager increases. 

Joao Carvalho, Diogo Goncalves, Lewis Grabban, Michael Dawson and Sam Byram are just some of names that Nottingham Forest brought in on either a loan or permanent deal. Owner Evangelos Marinakis made his intentions clear: that he wants his side in the Premier League very soon.

In came proven Championship manager Aitor Karanka at the helm, ready to guide The Reds to the top flight in English football.

But Forest's shakey start to the Championship this season will be a cause for concern for Marinakis. And the more an owner invests in a club, the more ruthless they tend to be with their managers. Karanka would have known this going into the job, but has only been able to produce one win from the opening six games of the season, drawing four times. Yes, they have made a good run in the League Cup so far, toppling Premier League outfit Newcastle, but that would not have been on the top of the owner's priority list.

The question now lingers as to how long Karanka is given to get the season going. They sit in fourteenth, and are in no way out of contention of finishing at the top end of the table, but it is a case of whether Marinakis believes Karanka is the main to do it. It is a very good Championship squad, and if Karanka is not getting the best out of it, his time at The City Ground will not be long.

The Reds are certainly not playing badly, and it just takes a few tweaks by the manager, and a few players to find form, before the club plays to their potential. However, it is whether that happens before Marinakis' patience runs out.