[2] In the 2004–05 season, he went on loan to fellow Israeli Premier League side Bnei Sakhnin, making 23 appearances and scoring five goals.

[2] On 12 July 2010, it was reported that Keinan had agreed a one-year contract with recently promoted Premier League club Blackpool, and that subject to a medical, he would join on a free transfer two days later.

Blackpool chairman, Karl Oyston confirmed that the club had held discussions with Keinan and were hopeful of signing him,[4] after a medical on 15 July.

[5] Five days later it was revealed that Keinan had passed the medical and that he was waiting on a work permit before he could link-up with the Blackpool squad in Devon where they were competing in the pre-season South West Challenge Cup tournament.

[6] On 23 July, Blackpool manager Ian Holloway confirmed that Keinan was about to sign, after finally being granted a work permit, saying, "Dekel has got to fly to Tel Aviv to get his passport done.

"[7] Over three weeks later on 16 August, Sky Sports News reported that Keinan had finally joined Blackpool,[8] claiming that he had signed a two-year contract.

[12] Keinan returned to Cardiff on 7 January, and found himself straight in the starting line up for the following game against West Bromwich Albion in the FA Cup, which was his 250th career appearance.

[19] In 9 December 2023, Keinan was named as the player-manager for Los Angeles Force in the third division National Independent Soccer Association.

He made his under-19 debut, two months after his 17th birthday, in a 2002 UEFA European Under-19 Football Championship qualifier on 30 November 2001, a 0–0 draw with Yugoslavia at the Herzliya Municipal Stadium.

In June 2007 he was part of the Israel squad for the 2007 UEFA European Under-21 Football Championship finals, held in the Netherlands, playing in all three groups games.

[23][24] He made his Israeli senior national team debut on 2 June 2007, in a 2–1 win over Macedonia, a UEFA Euro 2008 qualifying Group E game at the Skopje City Stadium.