Liverpool could turn their attention to Olympiakos left-back Kostas Tsimikas after their initial attempt to sign Norwich’s Jamal Lewis failed.
The Premier League champions had a £10m bid for Lewis, which included a substantial sell-on clause, rejected.
The Canaries wanted significantly more for the 22-year-old Northern Ireland international.
Liverpool, seeking cover for Scotland captain Andy Robertson, have also been monitoring Tsimikas, 24.
The Greece international played for Olympaikos in a 1-0 defeat by Wolves in the second leg of their last-16 Europa League tie this week as his side went out 2-1 on aggregate.