Alexander Büttner (pronounced [aːlɛkˈsɑndər ˈbʏtnər]; born 11 February 1989) is a Dutch professional footballer who plays as a left-back for Eerste Divisie club Vitesse.

[4] After progressing through the ranks at the youth system and reserves, Büttner made his professional debut for Vitesse on 15 March 2008 against Twente after coming on as a substitute for Haim Megrelashvili in the sixth minute following his poor performance.

[5] However, after coming on as a substitute for Megrelashvili, he played until he received a straight red card after a second bookable offence, in a 4–3 loss.

In the 2008–09 season, Büttner then made his first start for the club, where he played the whole game, in a 1–1 draw against Sparta Rotterdam on 20 September 2008.

[7] Having established himself in the starting eleven, Büttner then scored his first goal for the club in a 3–1 home win over Volendam on 20 December 2008.

[15][16] He managed to regain his first team place after the failed transfer move and went on to make twenty-five appearances in all competitions.

[27] On 6 July 2012, Vitesse agreed a fee with Southampton over the transfer of Büttner to the English club, subject to a medical.

[28] The proposed move to Southampton was subsequently halted "due to an unspecified 'demand' from an unnamed third party"; this was believed to be a claim for a percentage of the transfer fee.

[31] Büttner made his league debut on 15 September, setting up the second goal and scoring the third, in a 4–0 home win against Wigan Athletic.

[36] He scored his second goal for Manchester United on the final day of the season in a dramatic 5–5 draw against West Bromwich Albion.

After collecting a pass from Tom Cleverley in the inside left channel, he drove into the penalty area and fired a low shot into the far corner.

[39] In the summer transfer window, he was expected to leave the club on loan to Beşiktaş, but Moyes blocked the move from happening.

[40] Büttner then made his first appearance of the season on 25 September 2013, playing at left-back in a 1–0 win over Liverpool in the second round of League Cup.

[49] Weeks later on 21 August 2014, he scored his first goal for Dynamo Moscow in a 2–2 draw against Cypriot club Omonia in the Europa League.

[65] On 5 February 2016, Büttner made his Anderlecht debut in a 2–2 draw with KV Mechelen, featuring for the entire 90 minutes.

At the end of the 2015–16 season, making 16 appearances and scoring once in all competitions, Büttner returned to his parent club after Anderlecht decided against signing him on a permanent basis.