Filip Ottosson was loaned by IFK Göteborg to Norwegian club Lillestrøm SK on deadline day. The loan lasts until January and includes a purchase option. Ottosson stated that he felt a move was best for his development after a conversation with head coach Joachim Björklund, who was clear that those currently playing would be prioritized. Ottosson said he wanted to play more football and felt he had a greater chance of doing so at Lillestrøm. He also mentioned that he has reunited with Hans Erik Ødegaard, who was his former coach at Sandefjord.

Filip Ottosson has officially left IFK Göteborg for Lillestrøm on loan until January. The loan agreement also includes a purchase option. IFK Göteborg's football director, Jesper Jansson, stated that this is a chance for Filip Ottosson to have a new beginning.

After losing his starting place in IFK Göteborg's midfield, 29-year-old Swedish midfielder Filip Ottosson is leaving the club and is nearing a loan move to Norwegian side Lillestrøm. The prospective new club is set to play in the Europa League in the autumn. The deal being discussed between the two clubs is reported to be a loan that would last until the end of the year and includes a purchase option. Ottosson joined IFK Göteborg from Sandefjord last winter and is under contract until the end of 2029. In the 2025/2026 Allsvenskan season, he has made 14 appearances and scored one goal. His current Transfermarkt market value is €600k.