Bristol City could be without key midfielder Marvin Elliott for six weeks with a knee injury.

The former Millwall man missed Saturday's 0-0 draw at Ipswich and will see a specialist today.

Manager Gary Johnson believes Elliott may have torn a ligament, although he is hopeful he will not need surgery.

The combative midfielder will certainly miss this weekend's home game with Doncaster Rovers.

Johnson said: "I don't think it is a slight injury. I think it is quite a problem. I think it is anything between two and six weeks depending on what the specialist says on Monday.

"He will look at the scan and if the scan shows he has got some ligament damage in his knee, then that is a problem to him and to us because we need all our other players fit."

With Evander Sno (back) also out, Johnson had to play Lee Johnson and Paul Hartley at Portman Road, even though they had both missed training in the build-up to the game through illness.

The City boss said: "I was really pleased with Lee and Harts because they have both been out for quite a few days, and you could see after an hour they had suddenly lost all their energy because they were only drinking Lucozade for four days.

"Jamal Campbell-Ryce wasn't ready either – he has only trained once.

Gavin (Williams) hasn't played enough games either, but they did their job for as long as they could."

City will hope to have defender Jamie McAllister (calf) and striker Patrick Agyemang (thigh) back in their squad for the visit of Doncaster.

Johnson admitted his side were under pressure for the majority of the second half against relegation-threatened Ipswich.

"Second half we were under pressure too much to even think about trying to win the game, although we did create chances,? he said.

City were indebted to another superb display of shot-stopping from goalkeeper Dean Gerken for their point.

?Last week it was Danny Haynes who was the hero and this week it was him. He has certainly earned his money,? said Johnson.

?Like all goalkeepers they have got the odd mistake in them whether they are on £200 a week or £20,000 or £50,000.

?They all make mistakes and often their mistakes get punished. He makes more saves than mistakes, that?s for sure.? City have gone five away games since their last goal. The last time they found the net on their travels was in the 2-1 defeat at QPR on Boxing Day.

?We are sorry our supporters didn?t see a Bristol City goal but we have now gone three unbeaten and we just have to try to get these two wins back-to-back,? said Johnson.

?We keep trying to say we are not going to look too far ahead so Doncaster on Saturday is a big game and hopefully we can get a result there.