With the new month comes new clubs for players who had run down their contracts with their clubs in June 2019.
The likes of Diego Godin, Aaron Ramsey, and Adrien Rabiot have already signed with new clubs, with players like Ander Herrera seem to have transfers all but finalized.
We look at players who have or will move for free in the summer.
Rabiot did not play for Paris Saint-Germain in 2019 due to a dispute over his contract situation and the 24-year-old has now officially joined Serie A giants Juventus, who announced an agreement on Monday.
Rabiot will be joined by Wales international Ramsey who called time on his 11-year stay with Arsenal in February.
After an injury-hit end to 2018-19, the 28-year-old will be eager to quickly cement his place in the Bianconeri's starting XI.
A mainstay in Atletico Madrid's defence since 2010, Godin announced his departure from the Wanda Metropolitano in May.
Inter were always favorites to sign the 33-year-old and that deal was officially announced on Monday, with the Uruguay international penning a three-year contract at San Siro.
Manchester United tried in vain to keep hold of former Athletic Bilbao midfielder Herrera, who made 132 Premier League appearances after joining the club in 2014.
A move to Paris Saint-Germain is expected to go through in the first week of July.
Former Manchester City, Liverpool, and AC Milan striker Balotelli signed a six-month deal with Marseille in January and went on to score eight Ligue 1 goals.
The 28-year-old has not extended his stay at Stade Velodrome, though, and a return to Serie A is an option, with Parma having confirmed their interest.
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