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CELTIC have been given the green light to swoop for St Pauli striker Lennart Thy.

The German ace is on the Hoops radar after spies returned from Hamburg with glowing reports last month having watched the attacker rattle four goals past Fortuna Dusseldorf in the Bundesliga II.

Thy is available on the cheap in January as his current deal is up in the summer and Celtic are in the hunt along with rivals in Germany and England.

St Pauli are desperate to keep hold of their main attacker for their bid to return to the top tier in Germany and have slapped a new three-year deal on the table.

But Thy is in no rush to sign as he is determined to weigh up his options, including a

move to the Premiership.

Thy said: “There is no reason to sign a new contract just now. I will wait and consider my options before making any decision.”

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St Pauli are pulling out the stops to keep their star man.

Sporting director Thomas Meggle said: “We have made Lenny an offer and it’s a very good one.

“But we are aware there are other clubs who would like to sign him too and he will take his time before making his mind up.”

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Hoops boss Ronny Deila has also stuck Aston Villa hitman Libor Kozak on his shopping list.

The Norwegian jetted down to Birmingham on Monday night to spy on the Czech star – and was impressed as Kozak rattled a double in the Villa reserves’ 2-1 win against Derby.

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