Frank Lampard and Marcelo Bielsa have enjoyed some pretty tasty battles on and off the pitch and the sixth meeting between the two bosses will commence on Saturday, February 12.
This is after Lampard was appointed as the new Everton manager on a two-and-a-half-year deal, replacing Rafael Benitez, who was sacked in mid-January following a run of poor results.
His first game at the helm will be this weekend when his side host Brentford in the FA Cup fourth-round, before the Toffees travel to Newcastle United in the Premier League next Tuesday.
However, Lampard's first top-flight match at Goodison Park will be against Leeds United and it's expected to be a tasty clash given the sides' league position and the history between the two coaches.
Leeds Live have taken a look at the previous five matches between Lampard and Bielsa.
11/08/18 - Derby County 1-4 Leeds United
Bielsa marked his first away game in charge of the Whites with an emphatic win at Pride Park and it was a classic Championship encounter between two competitive sides.
This was also Lampard's first home match in the dugout at the Rams, but Leeds came out on top in a five-goal thriller to continue their unbeaten start to the season.
Tom Lawrence cancelled out Mateusz Klich's opener, before Kemar Roofe's well-taken brace and an Elzgjan Alioski strike handed the Whites all three points.
11/01/19 - Leeds United 2-0 Derby County
There was plenty of drama in the lead-up to the sides' second meeting of the season after it was reported that Bielsa had sent spies to watch Derby train.
Lampard was incensed and admitted it was 'bad' and 'didn't feel like it was fine', adding extra spark to what was an important game towards the top of the division, with both teams inside the play-off places.
However, the Whites would still end up coming out on top as Roofe and Jack Harrison struck to give Leeds the victory in a feisty encounter at Elland Road.
11/05/19 - Derby County 0-1 Leeds United
After losing out to Norwich City and Sheffield United in the automatic promotion race, Leeds had to settle for the play-offs and faced sixth-place Derby in the semi-final.
In the first leg, the Whites were dominant and took a deserved lead through Roofe, who met Harrison's cross and lashed the ball into the corner for his fourth goal in three games against the Rams.
Leeds held out to take a one-goal advantage back to West Yorkshire for the second-leg and it was a professional performance from Bielsa's men, who were excellent on the day.
15/05/19 - Leeds United 2-4 Derby County
Following Aston Villa's win over West Bromwich Albion in the first semi-final, Leeds were looking to book their place at Wembley Stadium and needed just a draw to get there.
The Whites got off to the best possible start and went two ahead on aggregate after Stuart Dallas hammered the ball home from close-range.
However, the Rams turned the game on its head against the run of play as Jack Marriott, Mason Mount and Harry Wilson put the visitors in front.
The dramatic tie took another twist when Dallas added his second to bring Leeds back on level terms, before Marriott won it for Derby in the 85th-minute to spark jubilant scenes in the away end.
05/12/20 - Chelsea 3-1 Leeds United
After Lampard left Derby to join Chelsea in 2019, there was an 18-month wait before the two bosses met again following the Whites' promotion to the Premier League last summer.
Although the game was played behind-closed-doors due to the Covid-19 pandemic, it was still a competitive clash and Leeds made the perfect start as Patrick Bamford slotted past Eduoard Mendy to give the Whites the lead.
But goals from Olivier Giroud, Kurt Zouma and Christian Pulisic gave the Blues the three points at Stamford Bridge as Lampard secured his second successive win over Bielsa.
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