For his own sake, let's hope Hakan Calhanoglu knows what he is getting himself in for as he crossed the bitter Milan footballing divide.
The 27-year-old completed a dramatic free transfer from AC Milan to Inter on Tuesday, agreeing a three-year deal to join the newly-crowned Serie A champions.
Many have walked the, at times, treacherous path before him, with the Turkish international the 39th player to swap sides in the Italian fashion capital.
AC Milan midfielder Hakan Calhanoglu has completed a shock free transfer to rivals Inter
The midfielder was a key part of Stefano Pioli's Milan side but failed to agree a new contract
Zlatan Ibrahimovic, Andrea Pirlo, Ronaldo, Clarence Seedorf and Roberto Baggio all spring to mind but many players have braved fiercely partisan supports to cross divides.
In England there was Sol Campbell going from Tottenham to Arsenal and Carlos Tevez swapping Manchester United for Manchester City.
In Spain, who can forget Luis Figo leaving Barcelona for Real Madrid and the pig's head that followed?
So yes, let's hope Calhanoglu knows what he has signed up for.
With that in mind, Sportsmail picks out eight moves which caused a stir and looks at how those players got on in the eye of the storm.
Sol CampbellTottenham to Arsenal, 2001
Easily one of the most contentious Premier League transfers ever.
Campbell had told Spurs that while his contract was running down to expiry in 2000-01 he wanted to stay. A renewal now seemed a formality.
But days turned into weeks, which turned into months and no renewal was found.
So Campbell was off... but nobody could foresee the drama that would unfold as he turned up to a press conference with Arsenal boss Arsene Wenger to confirm he was joining the Gunners for nothing.
Sol Campbell's free transfer to Arsenal from north London rivals Tottenham stunned football
Media were stunned. Fans were gobsmacked.
To the surprise of no-one in north London it was not a move that sat well over at Tottenham, where Campbell quickly became their 'Judas'.
Hundreds of handheld signs were held up bearing his new nickname when he returned to White Hart Lane and he was routinely booed and jeered after making a move few are brave enough to make.
But any regrets are likely to be non-existent as the move was an unquestionable success for Campbell.
The centre back went on to win two Premier League titles and two FA Cups with Arsenal.
He was a key part of the club's 2003-04 Invincibles season and is routinely in the discussion as Arsenal's best centre back in the Premier League era.
Tottenham fans hold up 'Judas' signs on Campbell's first return to White Hart Lane
Napoli to Juventus, 2016
Naples quite literally went up in flames when it was announced Gonzalo Higuain was leaving for Juventus.
Jerseys with his name on were burned, thrown into sewers, cut to pieces, as fans made their feelings clear.
A banner on the Ponte Maddalena Cerasuolo in the city told Higuain all he needed to know when it came to fan reaction to his Turin switch.
Napoli fans were outraged when Gonzalo Higuain left for Juventus and they sold merchandise of him mocked up in a Juventus shirt sat inside a toilet
'Rotten Dirty Traitor,' was the message. He was a Napoli legend, racking up 91 goals for the Neapolitan side but everything was undone going to Juve.
Juventus are seen as arrogant and Napoli stereotypes focus on the south being impoverished. It's more than just the footballing rivalry.
From a footballing perspective there was rich success for Higuain as he won Serie A three times, won two Coppa Italia titles and came runner-up in the 2016-17 Champions League.
But his Juventus career tailed off and loans to AC Milan and Chelsea could do little to rectify it. He eventually terminated his deal and packed up for David Beckham's Inter Miami with his brother.
Luis FigoBarcelona to Real Madrid, 2000
Spain was stunned when Figo crossed the Clasico divide for £36.2m to join Real Madrid from Barcelona.
The transfer was bitter, the reaction fraught from those at the Nou Camp.
His first return to Barcelona was feverish and he sensibly stayed away from throw-ins and corners as oranges were thrown, cigarette lighters chucked on and some bottles were later retrieved.
Figo was Public Enemy No 1 but it was his Nou Camp return a year later that goes down in history as a pig's head was thrown at the Portuguese star while he took a corner.
Barcelona fans were infuriated when Luis Figo decided to join arch rivals Real Madrid in 2000 - and he had a pig's head thrown at him at the Nou Camp (circled) in a fiercely hostile stadium
The severed head of a suckling pig. No one had quite seen anything like it.
It was so hostile that the game was temporarily halted as the referee asked Barcelona captain Phillip Cocu to appeal for calm with objects raining down towards Figo.
Much like he did at Barcelona, Figo won two LaLiga titles at Real Madrid but he did achieve at the Bernabeu what he couldn't at the Nou Camp and win the Champions League in 2002.
There are people to this day that still feel the betrayal of this deal and it set a tone of what awaited any player brave enough to follow the Portuguese's path.
Steven DefourStandard Liege (2006-2011) to Anderlecht (2014-16)
Anyone who is made captain at the age of 19 is quite something and Standard Liege fans thought they had the player the envy of Belgium in Defour.
He guided them to their first league title in 25 years in his second season but come 2011 he had agreed a five-year deal with Porto. If he was to ever return to Belgium, perhaps the Standard love story would write a new chapter as he departed with two domestic titles.
Only when he returned, he returned to join their bitter rivals Anderlecht.
Defour was not going to be able to escape it. He was going to have to return to face Standard and he was going to have to face the music, so to speak.
Home fans had no moral line to their protests as they unfurled a huge 'Red or Dead' banner which showed a tifo
