Lewis pulled up early in the game holding his hamstring, and was replaced by Matt Ritchie.
The left-back – who had come into the team when Ritchie was suspended last month – is now being assessed ahead of the club’s bust festive programme.
“It looks bad – it looks like a hamstring problem,” said head coach Eddie Howe. “It’s a surprise with Jamal, because he’s obviously so athletic. He’s been excellent in terms of his athletic work for us.
“Obviously, it was damaging to lose a sub so early in the match. I thought Matt Ritchie came on and was fantastic in his place. Certainly, it’s not the time of year for us to lose players. Fingers crossed, it’s only Jamal that will probably go into the Christmas period now in any doubt, but we need to check on a few others that were carrying things.”
5. Liverpool look to beat Brighton to Kozlowski
Jurgen Klopp’s Liverpool are offering £10 million for Poland international Kacper Kozlowski as they look to outbid Premier League rivals Brighton and Hove Albion. (Sport Express) (Photo by Lars Baron/Getty Images) | Getty Images
6. Newcastle battle spurs for Skriniar
Newcastle United are interested in signing Inter Milan defender Milan Skriniar, who is also wanted by Tottenham. (Daily Mail) (Photo by Marco Luzzani/Getty Images) | Getty Images
7. Toon launch big money Vlahovic bid
Newcastle United have made “a proposal for £85.1m or so” for Fiorentina striker Dusan Vlahovic. The fee is understood to represent “considerable temptation” for the Italian club. (Calcio Mercato) (Photo by Gabriele Maltinti/Getty Images) | Getty Images
8. Leeds place £20m price tag on Costa
Leeds United have now placed a £20m price tag on Helder Costa, which ‘could be met’ by Valencia. (Super Deporte) (Photo by Aitor Alcalde/Getty Images) | Getty Images