Swiss international defender Timm Klose joined Norwich for a fee reported to be £7million on 18th January 2016 from German side Wolfsburg, Klose, 27, joins the Canaries on a three-and-a-half-year deal having made 39 appearances in all competitions for the Bundesliga club.

Born in Frankfurt to a German father and Swiss mother, he was raised in Switzerland from the age of five. After playing in the youth teams of BSC Old Boys and FC Basel, he moved to FC Thun in 2009, making 59 appearances. Two years later joined the German club 1. FC Nürnberg for 400,000euros where he made 53 appearances. He joined Wolfsburg on 1st July 2013/

Klose made his full international debut for Switzerland in 2011 against Liechenstein, and as of January 2016 has 12 caps. He also played for the Switzerland Olympic team at London 2012

Klose made his Norwich debut in the 3-0 home defeat to Tottenham on 2nd February 2016. He made 10 appearances for City, scoring once against Newcastle before injury cut his season short. This contributed to Norwich's relegation from the Premier League.

Klose made 34 appearances for Norwich in 2016/17 scoring once. The following season saw him make 41 appearances and scoring four goals.

In August 2018 he was heavily linked with a return to Germany with Hannover reported to be very keen in signing him.

At the end of the 2018/19 season, a number of media sources suggested that Rangers manager Steven Gerrard would move to sign Klose who was no longer a first team regular at Norwich. Klose finished the 2018/19 season with 33 appearances and four goals as the Canaries won the Championship title and promotion to the Premier League.

Injury limited Klose to just 9 appearances in 2019/20 and it is speculated that if he had been available, Norwich may have avoided relegation from the Premier League.

On 7th October 2020 Klose returned to Switzerland joining boyhood side FC Basel on a season long loan with an option to buy. Klose had made no secret of his desire to play for the club where he started his career previously, and City have now sanctioned the switch for the Swiss international who was down the pecking order under head coach Daniel Farke. One of his teammates at Basel will be forward Ricky Van Wolfswinkel.

On 31st August 2021 it was reported that Klose had left Norwich by mutual consent.

In late January 2022 Bristol World reported that Timm was training with Bristol City ahead of a possible two year deal, with the Robins in need of a new centre-back. He signed for Bristol City on 27th January 2022 until the end of the 2021/22 season. He made his Robins debut two days later, starting against Preston in a game that finished 2-2.

Klose was made available for transfer in January 2023 in order to free up funds for two incoming transfers. He had made just 12 appearances in the first half of the season. He departed Bristol City by mutual agreement on 31st January 2023. He had played a total of 30 games for the Robins.