"We have had a virus in the camp for the last week or so and many of the players are breathing heavy but hopefully we are coming to the end of it. Michael Chopra was physically sick during the match and other players are suffering in the dressing room.
"Everyone put a shift in tonight and we will get them up and running on Thursday because we have another tough match on the weekend, but full credit to my lads after playing three games in six days.
"The FA Cup is the best competition in the world and it put this club on the world stage when we reached the final.
"Leicester are a good side and it will be another difficult match but we will be ready for them."
"It got to the stage where only one goal was going to win it but we didn't really create anything today," said Robins manager Gary Johnson.
"Michael Chopra is brilliant at playing on the edge and he did that all through the game but both teams competed, tackles were fierce although the pitch was a little uneven.
"We now have some time to prepare for the league meeting against Cardiff at our ground and we will be ready for them.
"It was a bit scrappy today and hopefully it will be a better match at Ashton Gate."