Pierre-Emerick Aubameyang said he left Premier League club Arsenal due to a strained relationship with manager Mikel Arteta but the Gabon striker is keen to start afresh at Barcelona and help the club turn its fortunes around.

Aubameyang completed his move to Barcelona as a free agent on Wednesday after leaving Arsenal by mutual consent, ending speculation around his future after Arteta stripped him of the captaincy due to a "disciplinary breach" in December.

RELATED| Aubameyang joins Barcelona as free agent after Arsenal exit

The 32-year-old was also sent home early from the Africa Cup of Nations after the Gabonese Football Federation said cardiac lesions were found in tests conducted in Cameroon following a positive COVID-19 test.

"I think it was a problem just with him (Arteta)," Aubameyang told a news conference on Thursday. "He wasn't happy and that was it. I can't say anything else because that's what happened. I wasn't very happy and I'm better this way.

"There were some complicated months. Sometimes football is like that. If I had to say something about this, I would say, on my behalf, I never wanted to do anything bad.

"Now I have to put this behind me, that is in the past. I want to think about the present," he added.

Aubameyang's signing follows the arrival of winger Adama Traore on loan from Wolverhampton Wanderers as Barcelona looks to rebuild after the departure of Lionel Messi to Paris St Germain.

In a quest to strengthen its attacking options, Barcelona also signed Spanish forward Ferran Torres from Manchester City for around 55 million euros ($62.68 million) in the transfer window.

RELATED| Barcelona signs winger Traore on loan from Wolves  

"Barca is a great club that has to win the Champions League, that's why I came here," Aubameyang added. "I am here to do everything we can to get back into the Champions League and then go out and win it.

"I have always had the dream to play in La Liga, it is something I have dreamed of as a child. This is the opportunity of my life. Barca are one of the best clubs in the world so that is why I am here," he said.

Barcelona is fifth in the La Liga, 15 points behind leader and rival Real Madrid, which has played a game more. Barca hosts Atletico Madrid on Sunday.