Complex sentence: He was part of F.C. Porto's youth team for a brief stint, but left soon due to homesickness, signing his first professional contract with Clube União Micaelense in 1994 and spending one season at the club.
Split into simpler sentences: He was part of F.C. Porto's youth team for a brief stint, but left soon due to homesickness. Pauleta signed his first professional contract with Clube União Micaelense in 1994, spending a season at the club.