England coach Eddie Jones is confident his captain Dylan Hartley can get up to fitness in time for the visit of newly-crowned NatWest 6 Nations champions Ireland.
Saracens hooker Jamie George deputised for Hartley last weekend, who missed the game against France with a tight calf.
While Hartley may return, there are fresh concerns over Elliot Daly, who only just returned to the England side following ankle and calf problems.
Click here for the complete 2018 NatWest 6 Nations fixture list
Jones said: “Dylan ran this morning (Monday) but we need to get a medical report on him.
“I expect him to be available but we’ll just have to wait and see.
“If he’s fit then he’ll be playing.”
Daly made his first appearance of the 2018 Championship in Paris, but faces a fight to be fit following a left foot injury, with the Wasps winger now wearing a protective boot.
Jones said: “The boot is just a precaution.”
Following defeats to Scotland and France, Ireland have moved ahead of England into second spot in the world rankings but Jones said he was not worried by this averse run of results.
He said: “Every good team goes through this period.
“It’s an essential part of developing a great team. The learnings we’ll get from this, albeit very painful, are absolutely crucial going forward.
“When you get a loss it tests your mental resolve. We need to get over the disappointment of losing to France and we’ve just got to focus on Ireland now.
“We’ve started that with a short run this (Monday) morning and a couple of meetings to get us on the front foot.”