Celtic have entered the contest to sign Noble Mendy this week. Media reports confirm the club are one of at least three teams pursuing the Spanish full-back. Two sides from Germany’s top flight also join the battle. Mendy nearly joined Rangers last season but did not pass a medical. The transfer collapsed before Celtic made a bid to sign him this summer. The player remains with his Spanish side, with a valuation estimated at £6.4 million. No check-up has happened for this new deal yet. Both teams must agree on a fee before any transfer can proceed. The situation develop slowly as summer transfer activity heats up.