Background
Twardzik was born in the Czechoslovakian Republic but raised and educated in Germany as his father played football there.
Twardzik was born in the Czechoslovakian Republic but raised and educated in Germany as his father played football there.
Celtic
On 1 February 2009, they were both signed by Celtic, a week before their 16th birthday. Filip and Patrik both suspended their education when they moved to Celtic. Their mother also moved to Scotland to help them adjust to their new life.
He made his second appearance in the next round of the Scottish Cup against Inverness.
Coming on as a late substitute in the 93rd minute. His league debut came on 7 April in a 6–0 against victory Kilmarnock, he came on shortly after the start of the second half and assisted the fifth goal with a clever back-heel.
Bolton Wanderers
On 2 February 2015, Twardzik re-joined his former Celtic manager Neil Lennon at Championship side Bolton Wanderers. He signed a two-year contract at the Macron Stadium and went on to score on his debut in a 4–1 defeat for Wanderers at Derby County.
He played three times in the 2010 Union of European Football Associations European Under-17 Football Championship.
He played 14 times in total for Czechoslovakian Republic U17s scoring five goals. He made his competitive debut for Czechoslovakian Republic U19s on 21 May 2011, in a 1–0 victory over the Netherlands.