Things went from bad to worse when winger Gabriel Martinelli hobbled off with an apparent hamstring injury in the 37th minute, just two days after Arsenal stood pat in the January transfer window despite Bukayo Saka and Gabriel Jesus already out through long-term injuries.

Mikel Arteta looking to shift focus from disappointing end to window by overcoming the two-goal deficit in Carabao Cup semi-final; Eddie Howe also left frustrated by January business; watch Newcastle vs Arsenal on Wednesday,

Mikel Arteta has admitted his disappointment at Arsenal's failure to sign a striker in the January transfer window but believes the club need to stay "very disciplined" to remain on track.