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