​Football’s most memorable swap deals as Brennan Johnson and Dwight McNeil swap sidesThe swap deal. Something usually reserved for Pokémon cards or book clubs, but, occasionally, the mad world of football transfers.This week saw Everton and Crystal Palace engage in a rare swap deal, with Brennan Johnson and Dwight McNeil swapping clubs in search of fresh starts. Following that deal, we’ve recalled some of the most memorable swap deals in football history.Francesco Coco and Clarence SeedorfIt’s easy to forget thatClarence Seedorf had a short-lived spell at Inter Milan, with the Dutch midfielder so synonymous with the red and black of AC Milan.Seedorf signed for AC Milan in a memorable trade with their San Siro cohabitants. Inter received wingback Francesco Coco in exchange for Seedorf during the 2002 exchange, and it’s a swap deal that AC Milan certainly came out on the better side of.Seedorf was already a two-timeChampions League winner by the time he arrived at the Rossoneri, and added two more European Cups during his time with the club. He became the first footballer in history to win the Champions League with three different clubs after earlier successes with Ajax and Real Madrid.Coco, in contrast, struggled with injuries and failed to make an impact at Inter before retiring from football at 30.Zlatan Ibrahimovic and Samuel Eto’oFresh from an all-conquering treble-winning campaign under Pep Guardiola,Barcelona sought a statement signing to spruce up their attack. Swedish superstar Zlatan Ibrahimovic was the man in demand, with Barca parting with a sizeable lump of cash to bring in the forward from Inter Milan.Inter, however, required a sweetener, withSamuel Eto’o packed off in the opposite direction. The Cameroonian had scored in two separate Champions League final wins for Barcelona against Manchester United, during a decorated career in Catalonia, but was offered to Inter in part exchange.It’s arguably the biggest swap deal that football has ever seen, with two genuine world-class forwards going in opposite directions, and a fair bit of cash alongside it.Zlatan scored 21 goals during a single-season stint in Barcelona, butfriction with Guardiola meant his time in Spain was short-lived. Eto’o, meanwhile, swapped one treble-winning team for another, helping Inter Milan to Champions League, Coppa Italia and Serie A success during his debut season with Jose Mourinho.Alexis Sanchez and Henrikh MkhitaryanWhen Manchester United secured the signing ofAlexis Sanchez, a wave of optimism swept around Old Trafford.The Chilean had been one of thePremier League’s top performers during his time at Arsenal, scoring goals in high quantity and bringing a tenacious work rate to the front line.But Sanchez was a shadow of the player he was at Arsenal, weighed down by expectation and perhaps his wallet from a club-record pay packet. He scored only three league goals in a miserable 18 months.Mkhitaryan, as he had at Manchester United, showed flashes of his qua