#1 Luis Suarez
After Roy Hodgson's disastrous reign as Liverpool manager, it was up to Kenny Dalglish to steer the ship until the end of the season. On deadline day of the January transfer window, Fernando Torres moved to Chelsea, but the Reds had it covered.
Dalglish would sign Andy Carroll and Luis Suarez to lead the Liverpool line for the foreseeable future. Carroll might have bombed, but Suarez was an absolute diamond for Liverpool. The Uruguayan dazzled straight away and continued his great form into the 2011-12 season.
Unfortunately, Suarez would be the centrepiece of his fair share of controversies. He was the butt of a racism allegation from Manchester United's Patrice Evra that took over his campaign before a bite on Chelsea's Branislav Ivanovic ended his following campaign early.
But for all of the controversies, Suarez was a phenomenal player. He would carry Brendan Rodgers’ side through their transition period as the Reds came so close to winning the Premier League in 2014. The current Barcelona hotshot had a late start to his season but ended up as the top scorer with a record-equalling 31 goals.
Suarez was Liverpool's talisman throughout 2013-14 and was the sole reason why they came so close to the title. He left for the Catalans after that season, leaving a gaping hole in the Reds attack. It took a couple of years for them to recover and start challenging again. Anfield has not seen a player as talented and brilliant as Suarez in the Premier League era and probably never will.
Liverpool has not made a better January signing than Luis Suarez.