The Norwegian striker made his Premiership return as substitute against Leeds United on Saturday after four months out with knee trouble.
He admits he wasn't quite 100 per cent ready - but that was more down to suffering from a virus the week before the Leeds encounter rather than the knee that needed operations in November and January.
He said: "It is always good to come back. The knee was a bit stiff after the game but it felt okay, everything is fine and the knee is good.
"My cold was still there on Saturday. I had an infection the week before and to be honest the cold was more of a problem than the knee. I could feel it straight away.
"It will be nice to now have a full week of training and be ready for the next game but it will still be a couple of weeks before the full fitness comes back.
"I should definitely be 100 per cent fit for the FA Cup quarter-final. I'll just try to get as fit as I can and try to be ready for the next game."
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Steffen Iversen hopes to be fully fit for our FA Cup quarter-final at West Ham.